I don't understand why people say things like this, but I can only guess it's because they haven't dealt with people addicted to Rx drugs or something similar. It is borderline impossible to help somebody that does not want help, and it's not a simple thing to "get them treatment". There is obviously not a good enough system in the NHL to test for the presence of illegal substances, and while a team or the league can suspect whatever they want there is no way for them to prove his issue and force him to receive treatment. Then there is the issue that sending an addict to treatment doesn't magically cure them, the person has to want it and work for it. Until people reach this stage they usually are in denial about their problem, which is what it sounds like if Mike actually thinks there's other teams interested in him.
You can't help somebody that doesn't want help. That is my belief. It's sad, I've lost friends from similar things. The NHL definitely has systems in place for those who ask for help, but for those who refuse it is very difficult.