Also, why should it be too much to expect even a $200-$300 meter to last and be viable?
In the audio world I have two vintage Technics SL-1700 MK2 Direct Drive turntables. They are loaded with sophisticated electronics and even optics for the tone arm functions in semi automatic operation. And they remain fully functional. These devices are elctromechanical with servo feedback drives to maintain speed accuracy and after 35 years still work just fine.
Then there are the 4 Dual turntable I have starting with a 1229 from 1972. Since then, I've added a 1229Q and two Dual 1219s. All of these are intricate mechanical and electrical devices that to this day work as intended as the day they were made. Many that were neglected are even restored to full operation with a little repair and clean up.
And do we even need to go into vintage phono cartridges, that are as delicate as feathers and still deliver superb audio delight?
All of the fore mentioned items and were, for the most part, only $30 to $175 when new.
Not to mention 25 year old laser disc players that still function just fine. These devices , utilize very intricate and sensitive electronics and still operate just fine. So, it's very difficult to excuse a meter that can't last 1 to 3 years or remain usable without purchasing another spectro to make "patches" and put band aids on profile tables to make it work properly. And then for only that particular TV or monitor they were profiled on. . . . and for how long??