They sure are! 
How many more are out there, that’s the biggest question?

Methinks these vets doth protest too much?

https://paulickreport.com/news/integrity_art/indiana-suspends-fines-two-veterinarians-four-months-after-offense-date/

It still not harsh enough, but Grasso sentenced 

to 50 months in jail

https://www.bloodhorse.com/horse-racing/articles/264844/grasso-hit-with-50-months-47-million-in-doping-case

I imagine he is LOL right now-- you are right, the sentence isn't long enough, but it is long enough - for him to suffer - over four years

Another scum gets 27 months

https://www.thoroughbreddailynews.com/a-small-pharmacys-worth-of-drugs-harness-trainer-allard-gets-27-months/

And yet Servis is still waiting for trial! 

He’s probably waiting to calculate a plea offer? They should not accept and let him get slammed in a trial!

I’m grossed out every time I read what they jerks did!

https://paulickreport.com/news/integrity_art/grow-some-balls-juice-him-up-in-pre-sentencing-letter-prosecutors-say-tannuzzo-learned-from-navarro-doping-program/

They are horrible and I hope they never get to come back to the track! 
The time in jail not long enough IMHO

It brings me to tears thinking what these scum buckets did to these innocent horses--  and you are right, their jail sentence is not long enough.