I highly doubt it.
They are supposed to be installed cold. If they're stuck, removing them hot is supposed to be easier.
Now, that is real a possibility. Barely getting to operating temp is not frequent but happens often enough.
Thanks for the input everyone
Very unlikely, they're a legit shop, nearly everything they order comes from Napa or CarQuest. Timing belt kit was Aisin. The taper on the tip looks like real NGK, the counterfeits used to not get that right.
These were installed by a trusted friend/mechanic at his shop during the first timing belt replacement. Almost every plug was welded in, tight coming out the entire way. I have changed plugs that have been in cars for 15+ years and 150,000 miles... This was my worst removal experience...
In my area, in the last few years, alot of local PD's have all started having a cop well trained in the DOT laws because the fines they can write are much much much higher.