It takes a good minute before the site even becomes interactive. If I was logged in it would be even worse with it having to load the text editor thingy etc.
Don't mind me typing "what?" in the search bar there, I thought the close button would just dismiss the bar at the top. Also note that I had uBlock active which blocked some requests. I don't even want to know how long it would take without it.
And for comparison here's old reddit: https://streamable.com/z2ath6
Do you seriously want to defend this?
Old reddit: https://streamable.com/k99kuo
Looks like the reddit servers are just slow, but the old reddit doesn't need to load so many JS files to become usable. Even if it is only halfway loaded you can already interact with it.
Because of the amount of JS files that the new reddit needs, it's not even a contest.
Gigabit internet, super computers in our pockets.. and people think this is "fast". This is why we can't have nice things..