AEW star Ricochet is facing a ton of backlash this week ... after he told a woman he's "glad" she's battling multiple sclerosis -- leading the wrestler to share his regret over the statement.
The exchange went down on March 16 ... when the woman appeared to be criticizing the former WWE talent's acting abilities.
Ricochet then apparently went to her page and read her bio, which shared a motivational line about her experience with the chronic autoimmune disease, because his response made a reference to it.