Ask HN: Improving Latency on the Substack Website?

I read various Substacks for about one hour every day.

I love the Substack model, but their website sucks terribly. It's full of random JS that freezes rendering every time I scroll down, making the reading experience awfully frustrating ("But it's right there! Just show it to me!"). And all this for 0 benefit, because it's a freakin' blog platform for God's sake, not a 3D engine, so it could use no JS whatsoever and work equally fine.

I tried to block JavaScript of course, but then some buttons break (of course! Why use simple <a> for navigation instead of function calls from a 500 kB framework?), and it makes the experience even worse.

So, is there a way to prevent JS from freezing the Website?