I want to say this: on weak smartphones, all these beauties will cause brakes, lags, and friezes. On any smart phone it will cause additional battery consumption. In addition, the task of the browser is to show web pages and be in the shadows in relation to them. Being comfortable doesn't mean being bright, translucent and with lots of special effects, with smooth beauty animations in transitions between UI elements. Everything is good in moderation. The way you see the browser is excessive.

After all, mobile devices are mobile devices.