That's a bit ignorant and smells like sour grapes. In this generation, RS is very satisfying to drive on roads and is surprisingly compliant - noticeably better than 991.2 RS! The only reasons I see to drive GT3 over RS are frunk, cost, and insecurity. But for many people, these things do not apply. Without roll cage, frunk is not that much of an issue. It's tiny compared to the rear space anyway. I daily RS to get break-in miles before track season, and rear space is fine for groceries, cases of wine, kids' sports equipment etc. Also, it gets attention only from car enthusiasts and anti-car people - others seem to think it's a 911 modded by a juvenile owner. I tried daily-driving 765LT and it was noticeably more awkward. It's a masterpiece of a car, but a painful daily. 750 would probably be a nicer daily, if not for the turbo lag, assuming they improved the gearbox. But RS makes me want to drive it every time I drive, even to do chores. I get groceries for the family twice as often as I did before. GT3 would be pretty much the same, maybe just a bit less compliant because of less adjustable suspension. And it's not like I'm biased because I have an RS. I can get any mass-produced car with just an email, and most I can get to try for a few weeks without even having to buy them. And I only got RS just in case I needed it to horse-trade for something more limited, without expecting to like it enough to keep.

As for cup car being better for track - in many ways it is. But it's much less accessible - no abs or stability control, slicks, unboosted brakes etc. It's all manageable but requires solid experience not to screw up. It also has no warranty and much higher maintenance cost, but that's nothing compared to trailering. Extra time loading and unloading, prepping etc would be the most expensive part of a track day for me. I have a crew doing it for me, even though I'm handy, and with GT3/RS I did everything myself, including changing brake pads and tires, and even exhaust, track-side between sessions. Trailer logistics just wastes a lot of time when doing it alone. Storing extra tow vehicle and trailer is also not for everyone. When I lived in big cities, the space for a truck and trailer near home would cost 5x the cost of an RS, at least. Storing it elsewhere means even more time spent, unless you have a crew doing all the logistics for you. So using a cup car with convenience comparable to RS is way more expensive and can be impossible if you don't have a team you can trust nearby.

As for RS making owners feel special - heck yeah, it does a good job there! Even after playing with real race cars (I'm in my 4th season of competitive racing with 12-15 races per year), driving it feels special, and is entertaining, exploring all the settings and so on. McLaren does it very well too, maybe even better. And it's a good thing. Why would one buy such a car to feel the same as driving a Corolla?

RS is also an odd-ball - it's a hot-rodded 911 rather than a supercar, while 750 is a real supercar. But in many ways, RS is more extreme in its engineering than many supercars, so feels more special to those who are after pushing things to the limit and geeking out.