Agreed.
And the silly-cone glues the cover TO the block making it a bear to remove. You will bend up the valve cover nicely going after some lazy fool that used silly-cone. I've seen several Honda pushers that were glued on (silicone). They would not budge at all. Couldn't get a putty knife behind the cover. Mower ran so I informed the owner.
Just use the OEM gaskets with some hi-tack spray on them. Little Indian Head or hi tack spray.