Definitely not the only ones - while almost every Android can be flashed with a different ROM, very few can be relocked, which is ‘needed’ (workarounds possible) because some banking apps need it in order to run - but definitely some of the best third party ROMs are specifically for Pixel. Ironic, the best phone to deGoogle is a Google phone, thanks to GrapheneOS or CalyxOS devs.
If not using a Google phone, the best ROM may well still be LineageOS.
Definitely not the only ones - while almost every Android can be flashed with a different ROM, very few can be relocked, which is ‘needed’ (workarounds possible) because some banking apps need it in order to run - but definitely some of the best third party ROMs are specifically for Pixel. Ironic, the best phone to deGoogle is a Google phone, thanks to GrapheneOS or CalyxOS devs.
If not using a Google phone, the best ROM may well still be LineageOS.