The thing with mock draft is that, for a lot of prospects, there isn't a consensus about their value. The same prospect can be viewed as a lottery pick by one scout and as a late first round pick by another one. Some prospect are polarizing because of an atypical playing style, lack of size, lack of athleticism, being extremely raw...
For the rest, I quite disagree. Saying "I like this player but not at #14" makes sense to me. It means that there are some players you find more interesting to be picked at #14 and/or you rather trade the pick than draft this player.
For example, a player I really like in this draft is Noah Penda, but I don't think Spurs should go after him at #14. He is just someone who plays the right way but he has his limitations (undersized for a PF and questionable shooting). Drafting players like Carter Bryant and Noa Essengue or trading #14 would be better than using this pick on Penda.