I just got this popup today too, but only in Brave, it doesn't show up in Firefox and LibreWolf at all and I use uBlock Origin for all of them. Looks like it's just a Chromium thing. I mainly use Firefox anyway, I only use Brave as a music player at work because I have too many FF tabs opened in 3 windows already.
At first, maybe? When I first started last year, I was pretty hooked since it was something new to me, minus the constant hackers spamming the message and grievers, it was so bad that I had to play private lobby only. The only thing to do is doing the same thing over and over again to earn money just to spend it to do the same thing again. There's no new mechanics, no story, nothing, just a constant grind and your reward is more grind.
Now I feel a dumbass for wasting two months of my life on it. Even Genshin is way better than GTAO, it actually has interesting story, fun mechanics and great characters. I've been playing GI since 2020, got a bit burned out and currently addicted to Witcher 3 but I still play it daily. But GTAO, fuck that shit, I left it more than 6 months ago and the thought of considering looking back never once crossed my mind.