there's a lot to talk about when it comes to luck in poker, but there's no point at all talking about skill, at least when it comes to large field MTTs. That's because by the time variance evens itself out, the game has changed and what may have been skillful play back in the day has now become useless because most of your opponents already know about the concepts you're applying and they will kill you with a newer style.
Today most of the "skilled" players are min-raising preflop, at least during certain segments of the tournament....back in the day, min-raising was considered bad technique, after all, it let worse hands than yours in for a nice price and gave them an opportunity to outdraw you,
pot odds. Yet, over time, players found a lot of good reason for min-raising anyway...so now it's the norm..so if you were a skilled player back in the day and your normal raise was 3xbb, then your play is outdated today.
Same thing applies today...if you're a min-raiser your days may be numbered...tomorrow the new norm might be all in preflop or something equally outrageous, old school min-raisers will call the new-schoolers donks, but over time, the new school of thought will catch on and start winning tourneys....
for a live tourney player, there aren't enough tourneys in a year that you can play in to really say anything at all about skill.