The website would've been fine if they hadn't added anything, yet they went out of their way to insult a small minority of their visitors using a <noscript> element, and took the time to write a weird rant about how you should really enable Javascript for some reason (I guess they only know frontend stuff and don't know how to run a backend server?).
To me, this degrades the website to the level of "personal blog of someone with a grudge" as much as websites that'll redirect you to a rant for leaving Javascript on. For a personal blog, that's just a weird quirk, but for a supposedly scientific, academic space to publish research, that's just bad vibes.
This is an irrelevant diversion, and materially untrue - "> What a lovely hat\nIs it made out of tin foil?" is absolutely hostile, and that fact is not contingent on the number of people who disable Javascript.