No. Graded bullion is still bullion. I see folks coming in to my buddy’s shop all the time with graded bullion and get their hearts broken every time. Heck, I may be all wrong but I suspect they will be all over EBay I. Short order for far less money.
Yes slabbed MS70 SE are all over Ebay for less money. I have an unslabbed SE I got for $36. That is when silver was $32 ounce.
I've seen dealers at shows try to conflate monster box ASEs with the collector version sold on the mint website as the same thing. While technically close, they are not the same. In a game where the difference between a 69 and 70 grade can be hundreds of dollars, minute differences matter.