This is great advice. I have a past life as a recording musician, and encountered this exact problem with band members. Sometimes they love the music, and total

This is great advice. I have a past life as a recording musician, and encountered this exact problem with band members. Sometimes they love the music, and totally want to be in on the gig, but don't have time or motivation or whatever to practice or write songs. The end result is exactly as you advise. You're still friends. You still might jam. But you're not doing this particular project together. Dragging it out means nothing gets done. Waiting until you find someone else just means you remain complacent. Nip at the bud and move on productively.