@Puppadore most traditional knife like all case, GEC, or buck 110's (and many like it) do not have any screws and are considered to be very reliable. Interestingly on that end of the knife market, screws are sometimes detested for looking bad and making construction too easy vs a well seated pin, especially a pin that is polished into a bolster or the scales.
I wouldn't worry about it. Flush the pivot and lock every now and then with light oil or Clean, Lube, Prevent (CLP) and you're good to go. Bearing knives are the only I've ever needed to disassemble because it was sluggish and it ended up being a rusty detent ball on the knife. Flushed that and it was all good. I prefer washers over bearings 9 times out of 10 anyway so I don't see that issue much anymore.
For lint, I think the main places I see it build-up to an appreciable amount is on back spacers and blade tangs, both of which are really easy to clean without disassembly. Just wash out the back spacer and you can scrape it off the blade tang. Picks are pretty useful tools as well.