For anyone interested in why, C was new and didn’t yet optimize to the same level that a clever and experienced human could optimize Assembly. IIRC, by the time he was developing Roller Coaster Tycoon, C compiler optimization was on par with human Assembly optimization, so it was the last notable game written entirely in Assembly for optimization purposes.
I think this was the video I watched where I learned this: https://youtu.be/0JouTsMQsEA
I’m having the same issue on Android. For me, switching to desktop mode to load the Anubis check then back to mobile mode so the website is usable again worked.