I've thought about trying competitive but there are two big barriers to entry I'm dealing with rn:
1) I have exactly one (1) friend who plays splatoon, and we have very wildly different schedules: I have a full time job and work weird hours; they are still in school and unlike me they have a social life (meaning that as self depricating but in a lighthearted way)
2) I am just kinda dogwater tbqh. I haven't tried any of the competitive modes bc, well, see above. No friends to play with + overwhelming number of tryhards to contend with in soloqueue = no thanks
Bonus barrier: esports favors the young, and I am very rapidly aging out as I'm in my mid 20's. From what little I've observed this isn't as big of a deal/problem in Splatoon in comparison to other esports/competitive games, which is why I don't really include it in my Big 2, but in combination with the previous barriers it's another dis-incentive.