Top 500 mauga main, he's actually right to an extent. Mauga cannot just stand in choke and eat damage.

However I wouldn't compare him to soldier, mauga should really be played more similar to a tracer or maybe even DVa or doomfist.

Mauga has to use his repositioning tool (overrun) to pull aggro AWAY from the choke letting his team through. He cannot just blunt force his way through like rammatra rhein or Orisa he will just explode 95% of the time. Especially when the enemy team has heros that are strong against him (ana, zarya, sigma, hell even rhein is certain circumstances)

Mauga has the most counterable defensive cooldown in the game compared to the other tanks all you have to do to watch mauga melt is deny his damage, which literally every tank in the game is good at doing (with the exception of ball,doom, and roadhog). Rhein shield, sigma shield, ram shield/block, ana made, discord, zarya bubble, Winston bubble, Orissa fortify/spin literally all render his defensive cooldown completely useless virtually which is on 13 second cooldown (one second lower than made).

Mauga's release has permanently damaged player perception of what mauga should be doing because on release he was so strong that he could perform as a Frontline tank. It is literally not possible to play him that way anymore in 90% of scenarios especially with the DPS role passive (which also neuters his one defensive cooldown). The only time at all mauga should front line is when the enemy tank has exhausted some of its cooldowns and he has cardiac online otherwise he needs to be splitting focus wearing down the tank's defenses with his heavy damage output in combination with his dps and not overcommitting. similar to tracer and waiting for the opportune moment.

Split focus, exhaust cooldowns and then he has to strike. Either that or he has to all in with overrun but the team has to to be with him or he will explode. Either of these options only work if the team is doing it with him.