[zogrodea]

Why, if not for the person's morals, would they want to avoid the .io domain? What benefit would they have through that action?

[otachack]

Saving money is another good reason. IO domains are inflated due to popularity, at least last time I checked.

[mym1990]

TLDs can disappear under certain circumstances, so long term there is a small risk of that. Depending on the TLD, it can also be less recognizable or downright fishy to some. .io has become popularized by the tech scene, but without context it is not very descriptive.