The WWE had a stretch of time where it allowed the performers to sacrifice their own physical and mental well being for the good of the show, but anyone who doesn't admit that WWE is a different company nowadays is misinformed. They have eliminated a lot of the overly dangerous aspects of the show, and have made a serious push to legitimize their healthcare. Performers have surgeries, rehab, physicals, mental health evaluations, and wellness tests all handled and required as a part of the business these days. They were burned extremely badly by the Benoit tragedy and other similar cases, so they have cracked down in an attempt to prevent another such occurrence.
Back in the day, it was common practice to cut or bleed yourself with hidden blades in the WWE. These kind of practices are much more regulated and replaced with safer, more modern techniques that portray the same effect while keeping the wrestler safe. Though accidents still occur, they're statistically much less likely, especially with the new regulations.
The WWE requires that all their performers have health insurance, but as the performers are technically independent contractors, the WWE does not profess an obligation to provide assistance. High premiums without any mitigation by the WWE lead to the problem of 'underinsured' performers whose policies do not provide them with either access to care when needed or financial protection from the cost of that care. This is especially problematic as there is a real possibility of injury for WWE participants.
The WWE has long since made its money off they physicality of its performances. However these performers often suffer debilitating injuries that are cumulative over the course of their career. Crippling themselves in their later years for a bit of time in the spotlight in their youth is irresponsible and the company should be willing to ensure that their employees can have careers post-wrestling.
Considering they have had multiple athletes who have gone on to kill themselves or harm others, no, I do not believe they are taking the best care of their athletes. They need to do a better job talking about the risk of steroids and undiagnosed mental illnesses not only for their own performers, but also for their young impressionable viewers.