I have a Sceptre TV from a few years ago that takes about 15 seconds from power-on to even display a boot screen. It takes another 10 seconds or so after that to actually become usable.

Maybe it's just an outlier? It's certainly slow, though.

Mine cold boots in 15-20 seconds (I need to check that), and wakes up in less than four seconds if it's on. It's a 2020 model.

My TCL takes 2:40 to boot up. There is (or rather, used to be) a fast boot option, but it stopped working after the second firmware update.

Is it minutes or seconds?

My tb takes 40 seconds from click8ng power button untill even HDMI input works. The smart features take another minute.