Also, my biggest issue with my HP Envy x360 is not getting inside. It's annoying to have to buy new (third-party) replacement feet after removing them (and shouldn't be done by HP regardless), but it's not a big problem. And the service guide is quite good. It's the fact that I haven't been able to buy a new first-party battery, I can't buy a new screen, mainboard, or trackpad if I end up needing one.
Sure I can (and have) upgraded the RAM and SSD, and replaced the battery with a third-party one (well actually two, the first one didn't have some ID chip, and would show a warning screen on every boot). But the RAM and SSD are just upgrades, and batteries are consumables. I can't reasonably repair damaged or failing parts if the screen cracks, if coffee gets spilled in the keyboard, if a port gets damaged. Only 4 parts are listed as available (pen tip, RAM, AC adapter, and Wi-Fi card), and only the AC adapter is in stock.