The point is this service is being marketed for those who don't wish to be in a relationship for whatever reason but want to give the appearance of being in one to others. Perhaps they are semi closeted or asexual or don't have the time to devote to a significant other or simply just don't want to give up their autonomy yet (or ever).

If someone starts a relationship for the wrong reason - because they only want to be in a relationship, not because they are in love with the other person - it is not fair. The other person doesn't matter, anyone will do, feelings won't there. That isn't very nice to the other party and just leads to hurt.

This happens all the time. All the time. Especially with marriages.

Not everyone wants to be in a relationship (for whatever reason) and that is fine. That also isn't a very socially acceptable choice. This service is marketing to that segment.

It has nothing to do with laziness.