Answer: In nature, Monstera deliciousa is an evergreen that climbs high into the rain forest canopy, attaching itself to trunks and branches and supporting itself above the ground with long tentacle-like aerial roots. The aerial roots will also grow downward out of the thick stem and take root where they touch the ground. When grown indoors the general practice is to push the roots into the potting soil where they can help support the plant. Since this was not done, your recourse is to do some aerial root pruning. I don't think removing some of the roots will harm your plant. I've also found that the plant becomes quite heavy as it matures so even if you staked it when it was small, it's possible that it will break the stake and come tumbling down as it grows taller and heavier. I'd just let it grow as is growing now. I've removed aerial roots from philodendrons and orchids without problem so I think you can do the same with your monstera. Best wishes with your plant.
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