Regular season results (and playoff performances, outside of just surface level outcomes) are also a leaguewide measure for the quality of a team and where you're at, and they often dictate the majority of decisions. In fact, relying too much on exclusively playoff outcomes when making decisions often leads to counterproductive actions that hurt the team moving forward.
The objective is to win the cup, but only 1 team each year wins the cup. That means that for the objective of this league, there are 31 losers each year. Some people have gotten it into their head that getting to a later round automatically means you're closer to winning the cup (and who needs context!), but there's nothing to actually support that. There are actually a surprising number of 1st round losses and even playoff embarrassments that directly surround winning seasons, and a lot of teams that go far in the playoffs never end up winning anything.
Each of our last 3 playoff series outcomes could have been changed by 1 singular goal. If we had one shot or one save go a different way in those series, and we had ended up winning, are we actually closer to winning the cup next year? No, of course not.
There's no prior playoff criteria for winning. There's no secret formula. There's no necessary build style. Making bad moves just for the sake of change doesn't help anything.