the mobile browser landscape has become a minefield of invisible popover, redirect and premium service subscription, only partially mitigated by adblockers (or none at all if using chrome on ios, because, reasons)
It takes getting used to but really allows you granular control of 3rd party requests on both a site-by-site and global basis.
Word of warning, most uMatrix users I've met say it becomes depressing to see how many 3rd party requests most websites require before they are even usable. It becomes very obvious very quickly.