You have a weird definition of "major knee surgery".
He's a couple facts for you:
In spite of two, so called "major knee surgeries", Parsons has never missed more than 21 games in a season.
His most recent surgery was on March 25 and he's already been cleared to resume all basketball activities:
"Sources say multiple renowned orthopedic specialists have given Parsons clearance to resume full basketball activities and expressed optimism that his knee would not prevent him from having a long, productive NBA career."
You don't come back and get cleared for full basketball activities a couple months after "major knee surgery".
This isn't an Oden situation, or a Roy situation. Parson's hasn't had the kind of injuries that have caused him to miss multiple seasons, or even more than 1/4 of a season.
And you thought the Blazers should go after Festus Ezeli, a guy who has missed 154 of 246 regular season games over the last three seasons. If you're going to be Debbie Downer, can you at least be consistent?
BNM