Ideally the Lite version of uBlock Origin provides the same protections as loading the traditional app without making any adjustments, requires no background JavaScript to run, has an even smaller memory footprint[1], and even alleviates potential privacy concerns as it doesn't require any network connections to function. Other Manifest V3 add-ons, like AdGuard, work more like uBO but also have deficiencies due to the way V3 treats those extensions as "second class citizens" of sorts.[2]
uBOL may be small compared to its full-fledged counterpart, but Firefox Mobile also has a much smaller browser market share compared to any other[3].
[1] https://twitter.com/gorhill/status/1748763311535948228
[2] https://github.com/uBlockOrigin/uBOL-home/wiki/Frequently-as...
[3] https://gs.statcounter.com/browser-market-share/mobile/world...