I'm younger than the six games and therefore didn't grow up with those types of games. I mainly bought the six games because I heard of the series before and wanted to know what it was all about.
It's just okay. I enjoyed 3,5 and 6, but the first two felt a bit like a chore to me, especially the first one. I will say that I had to use a guide for the first game. Can't imagine what it was like during the 80s and 90s without the Internet we have today.
I won't talk about the spicy content, because there's not much to talk about . Larry is an absolute muppet, and you play as the muppet. If you want to play a game where you do the ''deed'' more often, there are better games out there, and from the 80s too if that's what you are looking for.
The humor is a hit or miss. More often than not, I laughed not because it was actually funny, but more so because of the stupidity. However, there is a lot of meta humor and those one were funny. I didn't enjoy the stupid quiz at the start of the first game, maybe because I'm too young. Same thing for the phone numbers in the second game (go into the bonus tab in your GOG client and download the PDF).
The UI is fine I guess, it did the job. Larry walks way too slow. A lot of stupid death (don't forget to wear your rubber and to take it off. You'll know when it will come up). The puzzles are often time nonsensical or very straight foward.
As for performance, on Windows 11, it was fine. Never had a crash or stuttering. I haven't played the original DOS games, but I didn't feel like something was off. It felt like normal, functioning games. The games themselves didn't age well, but it's not because of the emulation
Overall, the games are stupid, the humor is a hit or miss, a lot of meta (and outdated) jokes. I played them for the experience, and I thought it was ok. If you like dumb humor, it's a series for you. If you are looking for spicy games or profound humor that will make you question the universe, you should pass.