I don't care all that much about average players' opinions when dedicated long-term players with comprehensive knowledge of draft formats are available, just like I don't generally care about average players' opinions on video game of the year when there are etc. etc. etc.
I think you're over-rating spikiness a bit here. OTJ is the spikiest draft format ever and it usually doesn't rank
all that high in these things because it makes 99% of players' heads explode. (It's also super color-imbalanced, as all the flashback draft review articles this week will attest.) LLM and TSP are more popular but still spikey enough to be a bit of a hindrance.
It's true that season depth is valued, but... it should be? I mean, draft formats are semi-randomized puzzles that get repeated over and over; when they're deep, that's better for dedicated players (who don't get bored)
and for people dipping their toes in (because the dedicated players aren't just crushing with autopilot archetypes every time.)
There are more factors that go in, too: speed range (ZEN and M12 are downplayed because only fast aggro is viable), variety of archetypes (ISD was the first really successful format at creating ten two-color archetypes), color balance (ONS is just stupid with how lopsided red and black are), common bombs (see ONS again for Sparksmith), overall matchup matrix (all the cube formats that devolve into dominant-strategy-vs-hate-strategy), etc.