Since NYC is sky scraper central, putting the main signals on a farm in LI would block reception in New Jersey and the west side, while having the towers in the swamps of New Jersey would block reception on Long Island and the east side, so Empire, 1WTC and 4 Times Square are the 3 central locations. Unfortunately the sky scrapers also create a cavern effect for for viewers in Manhattan unless you're lucky enough to have a sweet spot to place your antenna or a building with a master rooftop antenna. This isn't a new issue, it's been a problem since the analog era and was the reason why Manhattan first got cable in the 60s with the original marketing message that it provided ghost free reception of the locals, while the outer boroughs didn't get cable until the 80s when they started offering more than just OTA channels over cable, and many of the major VHF stations initially had UHF translators in the 70-83 range after the twin towers were built. That same ghosting from the analog era translates to multipath interference in the digital era and has been an ongoing problem since the DTV stations originally signed on from the North Tower in the late 90s/early 00s.
Even though it's been almost 20 years since the bulk of the TV and FM stations lost their main facility, those who wanted to return to 1WTC weren't able to do so until 2019. (To this day WPAT 93.1 is still operating from a series of STAs and is technically licensed to the North Tower) And of course due to false promises about the capacity of the shared master antennas from the Durst organization, WNYW had to settle for a signal smaller than WNBC or WCBS. Also, after they realized how long it would take to complete a new WTC, the area stations wanted to build a tall 2000+ feet tower on governor's island which would be tall enough to get over the skyscrapers and would have had things return to normal much sooner, but a bunch of NIMBY's blocked that move.
The duplicates of networks like Laff and Court TV are only temporary until their deals expire. Once WJLP (Laff, Mystery, CourtTV, Grit), WABC (Laff), WPIX (CourtTV), WXTV (Bounce) and WFTY's (Mystery and Grit) deals for the Katz networks expire, those networks will only be available via WPXN.
WPIX has a pending application to increase their power after the application freeze was lifted at the end of November.
WJLP is in the process of moving from 4 Times Square to the new 1WTC but as mentioned a few pages ago, they need manufacturer reps based in California and overseas to do a visual inspection and testing, but quarantining for 2 weeks before they can enter 1WTC, and quarantining for another 2 weeks when they get back home would take those engineers out of commission for almost a month for a project that would normally be less than a week. And in some countries like Australia, those engineers would have to pay out of pocket for their mandatory hotel quarantine when they're ready to go back home.
WFUT/WXTV's issue is the need to install scaffolding to protect pedestrians from falling debris while the work is going on. That's another drawback to NYC, instead of a tower farm like Philly has, our signals are on top of sky skyscrappers in high pedestrian traffic areas, so scaffolding is required for a project like that, and they can't construct the scaffolding until the NYPD finishes their project of installing pedestrian protection barriers around sensitive targets like the Empire State building to prevent car attacks.
WEDW/WZME's issue is not their fault, blame WJLP's owners who are perfectly fine with exploiting a loophole to move a station from Nevada to New Jersey and have a signal based in Manhattan, but then turn around and want to block stations who were always based in the Connecticut portion of the DMA from adding a signal to Manhattan to improve their coverage.
The numerous NYC area LPTV stations are affected by multiple things. The stations in the 38-51 range had to go off air once T-Mobile wanted to launch 5G services in NYC, the others had to go off air once the repack gave their frequency to another full power or class A station. And since tower crews are already stretched thin becuase of the repack, LPTV stations are at the bottom of the queue for their tower work. Covid didn't help things either, since it delayed equipment shipments and prevented the crews based in Europe, Australia and South America who were going to pick up the slack from entering the country.