I have been in several times. As a "drop in" customer, I have come to realize that Jelly Modern has little interest in drop in customers.
The donuts are good. I mean, it is hard to screw up anything that has both maple frosting and bacon on top.
Where things go a little (ok, a lot) sideways is in service.
This shop closes early in the day. Recently a colleague and I dropped in for an after lunch donut and were told twice that the shop closed at 2.
By 2, the donuts are no longer all that fresh. Sure, they look good in the display case (if you come early enough to see a full stock), yet nothing fresh is being made/delivered here after early morning.
As others have noted, this is a decent option for those who need to cater donuts that are both expensive and unique (though not so unique as to offend anyone.)
You can still get a big, decent 3$ donut here. Unfortunately, nothing about the experience makes it all that worth it.