Security concerns aside, IMHO this is more of an intelligence hurdle so people who can jump that are smart enough to not bodge this simple but very critical repair. To put simply: If you aren’t a professional auto repair shop with ODB-Tools, just know that these parking brake servos are self-adjusting.

Hyundai is also not the first one with these restrictions, lots of manufacturers have quietly implemented such hurdles everywhere in cars, especially Stellantis.

Also with “super cars” like the Ioniq 5 N (specifically the N variant) meant for rich guys, you usually don’t care about repair. You just pay the dealer for that. For comparison look for repairability in high-priced cars like some Ferraris, Porsches, Mercedes, BMW, Audis, etc. It’s a shit show all the way in the high-price terrain. Except Stellantis is doing this in the low-price range as well now. God I had Stellantis. Never again.