Did you even read what you linked?....or, as usual, just reading into it/seeing as you want it to be. Here's a quote:
"Mr. Tannehill suffered a partially torn ACL and MCL injury last December. After consulting with physicians, Mr. Tannehill chose to undergo stem cell treatment at the time hoping to return to play this season."
Yes, it says he consulted with physicians (including James Andrews)...but it didn't say what their professional opinion or recommendation was, only saying Tannehill consulted with them and then he (Tannehill) "chose to undergo stem cell treatment". For instance, there is nothing there saying Dr Andrews/Dr Uribe agreed that the stem cell treatment was the best option....only that Tannehill decided to go that route after getting their input....For all we know they may have counseled against the stem cell thing and suggested surgery as the best option (or, more likely, a combination of both - it was done like that with Jamaal Charles, Google it).
And it's very clear that this was Tannehill's decision....you really think the team would rather go with an experimental treatment or unproven one rather than just him having the surgery the first time?
https://www.muirortho.com/stem-cells-for-acl-injury/
"He elected to have his injury treated with rehabilitation and stem cell injections in the hopes of avoiding ACL reconstruction surgery.
His attempts to avoid surgery failed and he ultimately elected to have surgery earlier this month. Unfortunately, he will now miss the entire 2017 season, rather than possibly being recovered from a surgery that he could have had done in January."
"the jury is still out on the optimal utilization and formulation of these injections. ...The reality is that we are still working out the details with respect to which injuries are most reliably treated with injection-based therapy and which are not."
And, yes, at the end of the article they say it was "reasonable" that he chose to try it this way only as we've seen....it didn't work out.