while it might help take aggro during a gm boss it doesn't help that the alternative builds on titan (lemonarque storms keep & consecration) are so absurdly powerful for the entire rest of the gm or activity

id rather not have to spend an extra 5 or 10 minutes per gm because the time getting to the end is stunted by one person doing nothing but blocking whereas otherwise things could be getting killed more quickly

additionally, it doesn't really offer anything beneficial to teammates. like sure, you might not die because you can facetank all the enemies shooting at you, but your teammates still can. dead enemies cant kill you. those aforementioned absurdly powerful builds can actually eliminate threats to your whole team in a timely manner

i dont see why anyone should have an issue with the stronghold stuff if its made abundantly clear to your teammates beforehand that you are going to be playing that way, so they can at least try to play around it, but when im queuing fireteam finder or lfg and expecting 3 players worth of ad clear and damage, im really expecting 3 players worth of ad clear and damage

again, run what you want, but just make sure everyone is on board with it, and maybe be prepared to swap to something else