I bought a pair of Bogs in 2010-11 or so. The taller ones with neoprene uppers. On first walking through a puddle, I could see bubbles coming up out of what looked like a pinhole in the top of the boot. I contacted the company, they sent me a new pair of boots.
I took the new pair through a puddle, and could hear a popping sound afterwards- they had a pocket in the sole that pushed air out. I got another new pair of boots.
Now, I had THREE PAIRS of Bogs. I put two pairs away, and kept wearing them until they actually wore out. They never leaked from those initial holes, at least not internally. But by showing the company video of the issue, hopefully they did some checks on their manufacturing processes.
I just threw away the last pair earlier this winter, when the heel split vertically on both boots within a week. What do you expect for old rubber, they've been around for SEVEN YEARS.