Is every Gen 2 DIYer on a collision course with an engine swap?

I will not consider any car other than a Gen 2 for any reason. I am not a mechanic, but I am an avid DIYer and try to do what I can and learn something along the way. I had an '07 with a completely known history of full synthetic oil changes every 5k miles going back to day 1. I ran it myself from 90k to 240k miles and it never burned a single drop of oil. I replaced it with a rust free Copart '09 that had 150k miles. I've since ran it up to 195k. I've kinda felt it out by now and it seems to burn about a quart of oil in 5k miles. Disappointing given what I had to put into the car, but not too bad yet? Obviously plan to keep it topped off, but assuming the worst am I eventually looking at an engine swap? So many questions that would bring up, and I admit I need to do more research on my own. What is the best source for a block? Should I be looking to find a low mileage rear-end totaled Prius on Copart and just stash it for later for the block? Seems like the 60k JDM blocks are too good to be true. Just how involved is an engine swap? Do you keep most of the stuff on the block and pull it as a whole or strip first then pull the block? (everything else being equal). How is it connected to the transaxle? How do the motor mounts work? How do you get the exhaust off? What is going on with the fuel? Do you need a working Techstream to prime fuel or fiddle with ignition? I've never even had to replace a brake actuator or do the speedometer fix on one of these yet so in the grand scheme of things I'm still a baby. (I've never done an engine swap on any vehicle).