@johnmiceter
Not in my opinion, especially in pubs. You can always leave the match.
EDIT
Then, it is a clash of playstyles. On the one hand you have competitive players who actively look for a team to fight. On the other you have the more casual players, who prefer to loot slowly and get everything right before taking on an opponent. You can very well have players on both ends of the spectrum, competitive vs casual with equal stats, but MM does not care much for stats, as higher priority is given to speed of starting a new match.
Anyways, what happens is that you have the more casual/passive players staying very defensive, and the more competitive players actively pushing the fight. The result is that part of the team is still looting, while another part of the team has already gotten 3 kills and pushing a new team, eventually bite off more than they could handle, and die (mostly because they are missing the other player(s) ). By the time the casual players notice what is going on, the competitive player has left for another match. Because all that matters to them is action
At times the opposite happens, when the casual/looting player gets jumped, and killed, so the competitive player(s) has to try to go back and help, but by the time they get there the casual player has left, or the competitive player gets in a 6 v 1 situation because the party who jumped the casual is now third partied, and the team dies.
So, the casual player takes it easy and likes to loot. The competitive player, has to care for loot, but action is all that matters. So you end up with team comps like the one you describe.
In addition, according to this article, MM is optimized for speed not for quality.
MY OPINION: it does not matter if you are a casual or a competitive player, just try and be a good team player. Compromise a bit your playstyle to accommodate, reasonably, with the more casual/competitive players in your team. If you are a w+key player, it is ok to be an entry fragger, just try to not leave too much of a gap with the casuals, because you will need someone who at least distracts opponents. And, if you are a casual and cannot keep up with more competitive players, just USE YOUR MIC, just say something that alerts the w+keyer that you are a mile back --and hope he listens.
Other than that, complaining about leavers in PUBS is POINTLESS.
I hope you would take a look at the following article.
https://www.essentiallysports.com/i-dont-really-identify-our-system-as-sbmm-apex-legends-developer-explains-how-sbmm-alogrithm-works-news-esports/
Hope it helps.