A criticism that I see which I think is very valid is the fact that Mando is immune to any real danger thanks to his Beskar armour, making him affectively invincible. This was really highlighted when he was attacked by Gideon. If even a lightsaber can’t make a scratch, then where’s the danger? Why should the audience be worried. It’s like the Superman conundrum in story telling.
The only solution would be to strip him of his armour in season 3.
The Mudhorn almost killed him while wearing his older armor, but even with his new armor on he almost died after an explosion before IG-11 treated him. Beskar doesn’t grant invincibility and sometimes it’s a liability. Those Quarren sailors almost drowned him just to get his armor. Also, if Beskar kept Mandalorians from dying, then why are they all dead? (paraphrase Burg quote)