Keyless cars. This has to be one of the worst invention blunders ever, has made cars much more vulnerable to theft, and it's your fault if your car is stolen, if you didn't use a Faraday pouch. The manufacturers don't want to admit this.
Built-in delays when pressing a button. Televisions seem particularly bad for this: when you switch mine on, there are twenty whole seconds before you can actually use it. Even the old cathode ray tubes were quicker than that. On an old set, when you changed channel, it happened instantly, with a satisfying click. And I've had to train my parents not to press a button a second time if they think it hasn't responded, as this causes chaos; for example, pressing 3 twice gets taken to be 33.
@Sinkintotheswamp I too refuse to use car parking apps, even if it costs slightly more. Ditto using your phone to pay for things: this must not become normalised. If your phone is stolen, you are screwed; and as we know from other threads, this can happen very easily.
Devices such as Alexa, and Ring doorbells, I have refused both. As far as I am concerned, somebody is playing the long game to normalise being spied on in your own home, and paying for the privilege of doing so, softening us up for Orwellian telescreens. (Yes, I know this happens in lots of other ways as well, such as everything you buy, or do on the internet being monitored.)
Anything requiring a subscription: these add up quicky. I put up with the ads on Youtube, rather than pay to silence them.
Having to "create an account" for something, especially online shopping. I've sometimes abandoned a purchase, it it's too complicated.