You'll get a variety of responses, perhaps, but here is what I can offer.
Recovery is about change, about putting habits that hurt us into the past -- not to be revisited. The problem with drinking faking beer is that it's not about making important changes. It's too much like pretending. Pretending to "enjoy" a glass of wine or a beer or a mocktail. But the associations run deep. It gets people thinking a lot about the real thing.
And for people like us, that's thin ice.
My own two cents is that it's not worth it to engage in fake drinking and creating the ongoing exposure to old feelings and temptations. There is a world of delicious beverages that are new to us. Making them a part of the changes needed to live in recovery is a positive step forward.