I noticed the following:

• In Chrome, using scrollTo on an element with top set to Number.POSITIVE_INFINITY or Number.MAX_VALUE cause the element to scroll to the top. It is only possible to make the element scroll to the bottom by using a number such as Number.MAX_SAFE_INTEGER. I also tried Number.MAX_SAFE_INTEGER + 1000 and it also worked.
• In Safari, Number.MAX_SAFE_INTEGER and Number.MAX_VALUE both worked to scroll to the bottom, but Number.POSITIVE_INFINITY also scrolled to the top.
• In Firefox, the behavior is the same as Safari.

This has been tested on macOS.

Anyway, I'm curious why POSITIVE_INFINITY won't work, and why MAX_VALUE also won't work for Chrome I suppose some source code spelunking would easily reveal the answer. I wonder if the spec has anything to say about it, but the inconsistency in implementations would indicate that maybe it's not rigorously defined.