You want to know what the teams with the biggest budgets have? They have the best drugs. They also seem to get the most favorable treatment from the UCI when a problem does occur ( jiffy bags, failed salbutamol tests , 100's of vials of testosterone that no one can determine who they were for, etc ).
I'm not arguing that Jumbo isn't doing drugs, of course they are, as is everyone in the peloton that cares about winning, its just the ridiculousness of 4 different TDF winners in 8 years is over the top. Especially when those tour winners include Wiggo, Froome and Thomas. At least Bernal was thought to have GC talent when he arrived at Sky. The others, not so much. If Roglic, van Aert, and Sepp Kuss each win the TDF over the next 7 years, I will agree with you that Jumbo is as ridiculous as Sky/Ineos.