Froome's rise to and fall from the ionosphere are credibly bookended by bilharzia and trauma.
Any outsized talent like Pogacar can be made more believable by waving the doping wand. That's a small minded approach. The simple fact is that he and others are unbelievable specimens to begin with. Table stakes are almost that you must suspend disbelief to even contemplate their output.
You don't have to suspend suspicion or monitoring. But until there is a tangible finding to discuss, this "do you think" stuff is a dog that doesn't hunt.