The new Iron banner rift has existed twice and it plain obvious that whoever designed it shouldn't design games ever, who ever aproved it shuldent be runnign this game, and work needs to be put in to fix it. Like alot of it
1 Respawn times: The respawn times is long, 10 seconds... if the enemy team does one good clear and push they win.
2 Respawn locations: puts you so far away from the objective that you can't defend it at all ever.
3 how you make a rift ignition: are so easily made that some use eager edge to skate upp and dunk and it counts.
3 ends after 3 rift ignitions: if you had any dreams of trying to push back "well hell no" it's already over.
1: shorten the respawn time it's too hard to make a return and they need to be shorter.
2: Make the respawn locations locked to ether your base (with a no kill zone that allows you to respawn, that you cant shoot from or return in to after leaving) or a cover close to your team.
3: if the ignition was something you had to deposit (not for long, a sec at most) it would fix fast movement dunks as a wole. Also it would mean that the dunking team needed to control the enemy rift location.
4: make the rift game have a unlimited counter so it doesn't end after five (or increase it to 6) and the auto end match to end after either half the time or at a higher end number like 4+
ultimately the current Rift mode leave guardians with short claps they cant recover from cus when strat changes come its over the respawn did not allow for a second push nor did the respawn location or the enemies fast movement, no ults even on 5 dunks games cuz the overall timer is to short. Rift is a cool idea but poorly executed and not very endgame like. Its a game mode design for bigger maps and it didn't account for players ability to use faster movement methods. It's a massive "endgame" failure and at this point its what bungie is expected to deliver, but bungie is also the pretty good at making awesome comebacks so i'm expecting massive fixes "like always" to rift to fix these issues.
None of the things you listed are such huge problems that they would justify your suggestion that someone shouldn't be designing games. They're really just things that can be easily adjusted if they need to be outside of maybe the spawn thing which is really more of a subjective matter.
Not sure if you're raging at the respawn timer ticking down or what but rift seems fine for the most part. If anything it might have some of the same problems every other mode has sometimes. Is the possibility of someone using eager edge to do what you're saying people do really that huge of a problem?