You weren't kidding about that. I loaded up the site in a clean browser and it's much worse than I could have imagined.
And this is with uBlock Origin/uMatrix:
Even with uBlock Origin/uMatrix the page is ridiculously bloated, but that's modern web design for you. Why do anything with clean code when you can import several megs of generic javascript libraries instead?
Block the anti-adblock.
There are free options as well, but I've found 1BlockerX to be most effective on iOS:
https://apps.apple.com/us/app/1blocker-x-faster-safer-web/id1365531024
I believe there are some ad blockers which work like this, only hiding ads rather than blocking them.
The problem is that they're still a privacy/security risk, eating your data, draining your battery, and tracking you.