I have seen so many complications from tail docking and ear cropping while working in a clinic (not done at our clinic, done elsewhere, ended up with us for the problems) that I would never do it to any critter of mine.
Same with declawing cats. I’ve seen more than a few cases where people just took nail trimmer and clipped tails or claws often crushing bone in the process rather than getting in between the bones and what a mess!
I wish I had found our poodle pup’s breeder BEFORE she had the tails docked, I would’ve insisted that he be left alone.
Luckily for us, Roger’s tail was done correctly and gives him no trouble.
But at any rate…back to the OP–unfortunately, a lot of PB type dogs are bred and owned by people who don’t even bother with veterinary care of any kind. So a lot of the jobs are DIY and they’re done very poorly.
We love our PB (my family’s) but they are not the kind of dog that should be in the hands of nefarious or clueless people.