Would you really go back to the internet as it was in the 90s? The current one may have problems (to say the least) but it also has miracles.
I’d go back for nostalgia, but not for practical purposes. Even in the 2000s it was much harder to find information. Wikipedia didn’t launch until 2001, and wasn’t useful till long after.
Usenet in the early 1990's is still superior to modern forums. Threads could go on for years, the newsreader programs automatically marked posts as read and would only show you new posts in the thread. Compared to today it is hard to find what is new and then discussions die after a day on places like Hacker News and Reddit after it is no longer a top post on the page or subreddit.
I’d go back for nostalgia, but not for practical purposes. Even in the 2000s it was much harder to find information. Wikipedia didn’t launch until 2001, and wasn’t useful till long after.