So vote with your wallet (as they say) for the companies who are innovating and putting out these products.
That's what I'm doing by not buying whatever repackaged romper Roland is selling.
My understanding is that DSP modeling of acoustic instruments with a guitar is now available in software.
It most definitely has gotten better since 1990 or whenever the GR-50 came out.
My GR50 tracks just fine, not perfect and from reading opinions from trusted sources neither is the GM 800. The gr50 pitch to MIDI to external synthesizers works way better than the vg99 and the sy1000 both of which I have tried and kept the sy. I also use one of two GR300 where I generally combine the synthesizer attack sounds of the sy or GR300 with a whole lot of analog synthesizers, or just run the analog GR300 through other analog filters.
With the external pitch to midi of the gr50 I now have access to a things such as 8 MB borgendorfer piano sample, mellotron samples etc from an emu ESI32 sampler. The sample snippets just don't cut it.
And for analog synthesizers why not just use real analog synthesizers as opposed to a sample analog wave snippet through a digital filter.
Here are some quotes from vgf
"As an FTP user, the GM-800 feels sluggish. The FTP is still by far the best in terms of stable and fast tracking. It's no contest. I can't recommend the GM-800, but don't take my word for it—-you should check it out to see if you like it."
"IF GUITAR TO MIDI is your only need - look at other gear
( send your GM-800 back and enjoy alternatives )
But no Guitar to MIDI SYSTEM or Roland GR , or Boss GM-800 - even the wired fret Systems can replace the play experience I accomplish with VG-99 VGuitar System."
"With my current band, guitar synths have not been a priority. And for my playing style my GR-33 still tracks with far less random false triggers, and more reliably vs my GM-800"
"I've gone through many tests now, and I realize I could be wrong, but I truly believe the Roland GR-33 is better for me. I went back and forth, and the GR-33 keeps responding better and actually sounding more musical for what I do. I REALLY want to like the GM-800, but I just can't."
From a guy who did a yt demo.
"You mean from the glitches? Like when you fret and it triggers a note before you pick the note? That's a function of the pickup doing its job and passing on what it hears to the synth. The cleaner and more precise you play, the less artifacts like that you will encounter. Harmonics, fret buzz, odd muting, etc will all cause these glitches. Heck, even a bad/cheap cable does it. I have a short on my channel I posted last week where I am just banging the hell out of my bass and I only heard a couple of these glitches. I THOUGHT maybe this system is more forgiving, but probably not, maybe I was just being more careful?"