It's a project that uses grin's technology, or rather, a fork of his. Is Mimbewimble really exactly what we need for privacy? Hmm, I have to think about it. Because the ease of use doesn't seem to be perfect. Mimblewimble alone is a beautiful invention, but there are no obstacles to further perfecting this technology.
Although Beam has grown well communally, there are question marks in my mind about the "functionality" of the technology it offers. Because it's really hard to deliver a privacy project and make it sustainable. We've all seen how the Zerocoin protocol, which we trusted so much, just disappeared.
I think we shouldn't rush to Beam, it has to be at least 2-3 years until we personally think about really investing in Beam.