Doping

they pushed to the absolute limits of what is allowed within the rules...applying for TUEs when there was no real medical need

Applying for a TUE where there is no medical need is not allowed. Either the TUEC which approved them was corrupt (i.e. they knew they were being lied to but did nothing about it), or the applicant engaged in fraud (i.e. they successfully deceived the TUEC with falsified evidence)

but there's no evidence of crossing that line

True, but a particularly suspicious episode cannot be disproven with any reasonable evidence either. Evidence that, by all accounts, should be easy to obtain for any team with even half decent record keeping. You keep saying "no evidence" but that is the lance defence. I say, no smoke without fire.

I've no doubt other teams are doing the same thing, other riders, but they are not partly funded by the UK taxpayer/lottery or a knight of the realm.

Isolation?

I think they're all at it.

Now, whether they were within the 'rules' or not, it's hardly a zero tolerance approach. It's just more of the shitty same. I think there's questions as to whether the TUE was legitimate, what was really in the jiffy bag and a whole host of others.

Do I think the whole team were doing it? I have no idea but I'm quite sure they each knew the extent of what was going on.
I think the funniest thing for me is Shane Sutton and Dave Brailsford's weight loss at the same time Kenacort was doing the rounds and available to anyone. The vain pricks.