"In the end if we really wanted to travel fast we wouldn't be cruising on a sailboat" is a tired argument that doesn't relate to the tender.
I'll agree, we have a vessel larger than most. It was purchased as our home to spend years full time on. Our rib tender has been invaluable. We tried going smaller/lighter but after spending $2,300.00 on it we sold it after 1 days use and went back to our beat up AB rib. The instability was terrible and it wouldn't have lasted more than a year.