Moving the insertion point long distances in the Safari address bar is one of the most tedious interactions in iOS.
Custom URL keyboard to the rescue! https://testflight.apple.com/join/vlrv6dn1
Join the URL Quick Keyboard beta

Available on iOS

This keyboard was created by ‪@elijah
@siracusa @elijah I wish there was a way to highlight from end to the first /, ?, or #. Or at least a delete key so I can delete the crap after I move the insertion point to the end.