hes not a yardage monster, so I wouldnt label him a WR1 yet.
I'd have to see how the chiefs are using him. given the low yardage and high volume in terms of volume/catches I'd bet they are using him in the slot.
That said, once a guy proves himself, sometimes the team will push him to the outside to be a WR. in looking at him hes not a large WR but not small either. so he could be a tweener that can play anywhere. personally I think hes a WR3 who gets bumped to WR2 because Mahomes is tossing the football. I dont see him as a bonafide #1 WR. but I could be wrong. kids still growing as a player so the upside can be higher still