Might be anecdotal but on top of that, I've noticed that many car owners who previously only had services performed by a shop began doing their own maintenance. A friend who works as a service manager at CarMax had similar observations in conversations with some customers, including one DIY-er who forgot to torque their oil drain bolt correctly, lost the oil, and is now the recipient of a refurbished engine.

I had only done light maintenance/upgrade work on my cars prior to the pandemic. In the last year I've replaced a rear main seal, front + rear rotors + pads on all my cars, new control arms, shocks, and struts on a sedan, a ton of electrical work, cold air upgrades, every single fluid drained and filled, etc. DIY content on YouTube is getting to the point where a middle schooler can fab a car from scratch given enough time and motivation. YMMV (literally).