Comment by jorvi

No, a high skill floor is the opposite. It means that anyone can pick up the thing and immediately do decently.

To put it simply, think assault rifle vs sniper rifle. Anyone can use the AR and spray and pray and do pretty okay. You can't do that with the sniper rifle. So the AR has a high skill floor (minimum effectiveness) whereas the sniper rifle has a low skill floor (low minimum effectiveness). But the AR has a low skill ceiling too a point where you can put in endless amounts of skill and see no improvement in effectiveness. The sniper being an infinite range OHKO can scale to the end given aim skill and map knowledge.

Another example would be Reinhardt in Overwatch. You can tell a noob to "look in that direction and deploy shield" and they will contribute to the team. You can't put a noob on Widowmaker and have them contribute (as) significantly.