This is not normal everyday maintenance for a vacuum. Stripping it and giving it a full refurb to this degree is what you do when you first add a vacuum to your collection. You want to fix all the broken parts and get it all shiny and like new to admire in your collection, because it's not fun to have someone else's dirt and debris in your house! I do the same thing. I have a bunch of vacuums waiting in a big queue like the line for a fairground ride to get their chance to be operated on and shine like new again.
90% of people today never clean their vacuum at all (especially with bagless vacs) and when it gets clogged up, they throw it away or give it to Goodwill. Bagless vacuums have less tolerance for neglect than a bagged vac. You can get many expensive vacuums for cheap (or free) just because they are dirty and clogged because the owner says "it doesn't work anymore". As long as you know how, putting in the labor and time into fixing a free vacuum can give you huge savings versus getting a new one. I probably have over $2,000 in Dysons right now that I got for around $25-$40 each (going by their original MSRP).
The people that run these vacuums into the ground and then toss them out are the people that get these vacuums into such a poor, filthy state and then some. Once the vacuum is cleaned and refurbished and all good to go again, you have no worries about it ever getting that dirty again so long as you are not one of those neglectful people and you empty the vacuum when you are supposed to and perform regular maintenance and don't let it get so bad.
For a lot of people it's a refreshing and relaxing experience to take a vacuum apart, fix it up, and get it back onto the carpet again and keeping one less vacuum out of the landfill, especially if it's a rare one. It's so satisfying for me to take a vacuum that has an ear-numbing bearing squeal and horrible vibration and giving the motor a total restoration, and then plugging it back in again and having the motor sound like it just came out of the box. And then take it on a vacuuming spree across your house! Even better when you take a vacuum that's been rotting in a chicken coop for 80 years and getting it back into motion for the first time since Model T's were on the road and big band jazz music was on the radio. lol
But back on topic, my brand new Eureka I bought in May is barely even dirty after 5 months of weekly use in a house with 2 dogs and a cat. It's got residual dust and particulates all over it, but no clogs and no built up dirt in any crevices. I empty the dirt cup after every use or whenever the dirt reaches the bottom of the cyclone screen. I give the filters a rinse afterwards, and its still in tip-top shape. As long as you do at least that, you won't get the hard-packed dirt that builds up all over the vacuum, as the dirt has a clear path to go into the filter and the bin where it is supposed to.
Great job on the cleanup, niclonnic! It looks mint!
tH