For me, the only way the drinks were similar to beer was that the nitrogen infusion did give them a similar texture. My wife (who doesn't drink beer or tea) did try a sip and described it as "beer-y", so I think this depends on how much you're into beer/tea. I found them all fairly sweet, which I wasn't expecting from tea, but I was happy to be surprised on that front.
My favourite was the green tea pitaya (dragonfruit) blend. It was sweet, but not overly so, the fruitiness from dragonfruit was fantastic, and very refreshing.
The black tea and yuzu I thought I wouldn't like, as I typically find black tea too bitter. But it was great. If you've had a lipton lemon ice tea, this tastes like a smoother, fancier version of that.
The white tea and calamansi was probably my least favourite on first try, but it grew on me. This one funnily enough I thought came across as the most similar to beer. Something about it gave me the vibes of a weisse beer or citrus beer.
If you're looking to replace your evening soda/beer with dinner, I don't think you could do much better. Highly recommend.