1031 and crowdfunding?

[Pearce G.]

Just listening to Noah Kagan on podcast #213.  He talked about parking his excess cash with a crowdfunding site like Peerstreet where he is in a 1st lien position.  Makes sense, but got me wondering if re-investing through a crowdfunding site could qualify for a 1031 exchange.  Let's say you sell a property for 100K and then re-invest all of it in a million dollar apartment development alongside other crowdfund investors.  Could that be your replacement property in a 1031 exchange?  I suspect the answer is no, because I don't see the crowdfunding sites promoting it...but I couldn't think of a reason why not.

Is there a reason why a crowdfunding site could not serve as a Qualified Intermediate?

Do 1031 exchanges prohibit syndication investments?