The USCG does not often save vessels when they are not likely to pose a threat to navigation. I'm surprised they towed this thing back in at all. As pointed out, helo rescues don't even try to save your boat, but rescues from ships don't tend to do that either. I would think this guy would be ready, willing, and able to build himself a new bubble if that happened though.
Some people have a wild hair to do certain things. This guy certainly has one for pushing a bubble to Bermuda for whatever reason. At some point he will either make it or die trying. Let's just hope his insistence doesn't get anyone else killed in the process.
But people doing these ridiculous things and actually pulling them off is where progress comes from. I'm sure the Wright Brothers had a lot of people calling them dumb for continuously crashing different prototype aircraft off the dunes in Kitty Hawk and the rolling hills of Dayton, Ohio, but now that we've been to the moon and back, broken the sound barrier, and make regular trips in packed commercial jetliners, their work seems not only normal and important, but somewhat mundane compared to where we are now.
I'm not saying that Bubble Boy is going to usher in a new era of marine travel or trans-Atlantic passage making, but his breed are the ones who actually stand on the shoulders of the giants that came before, and occasionally make a major breakthrough that changes everything. As something of an adventurer myself, and having had many people scoff at the early stages of ideas that ended up making a lot of sense and working out well, simply because they were a bit out of the box at first glance, I have some sympathy and empathy for this guy, and can understand his obsession, as I, too, become obsessed with ideas and with things I know can be done, but just need to be figured out first with some trial, error and luck.
So give Bubble Boy a bit of a break. In a few years we may all be enjoying the water differently, or maybe have a whole new breed of liferaft, or perhaps have some other capability that we didn't have before the wild hair stretched across Bubble Boy's...