There's a really generous guy who spends a lot of his own time and effort putting together predictions and forecasts related to earthquakes and volcanic activity. He's not a trained Scientist but he's very knowledgeable and he's put in a ton of work to try and come to his own understanding of Earth's geological processes.
He's not perfect by any stretch. A few of his ideas and some of the things he states at times are wildly speculative and sensationalistic. So you have to take his analysis with a grain of salt, and I typically don't recommend his coverage. But, there is no one out there providing the kind of service he does and it most certainly seems as if something pretty serious is going on if you look at the big picture. The Nepal earthquake, Calbuco eruption, Michigan earthquake, eruption in the pacific off the Oregon coast, the overflow of the lava lake at Kilauea in Hawaii, etc.
I most definitely place more faith in what the USGS states publicly. But what a lot of people misunderstand about science as a process is that it's very slow and very conservative. Wild claims can destroy a career pretty quickly. So he fills a void in between science and public awareness which is completely underserved for such a narrow subject matter. What he's pioneered is something akin to The Weather Channel, but for earthquakes. His audience is pretty large too at this point, so there is a definite hunger for the service he's providing.
I've pondered for years about whether or not the Earth's crust would experience thermal expansion stress due to heat conduction coming from the atmosphere and exposed land masses via global temperature increases. Most people aren't aware of the fact that the rise in ocean levels in the coming years is predicted as a consequence of thermal expansion not melting ice. Thermal expansion is an issue when anything is heated. If you look through my comment history you can see that I've brought up my concerns about thermal expansion in the crust on Reddit a few times. I don't know if this is going to happen with the plates; but my main worry about this is that it hasn't been studied very widely*. This is what led me to discover Dutchsinse.
I find it difficult to dismiss the idea that there won't be expansion at some level. What that level is? I don't think anybody really knows as understanding this would depend on data that has never been collected. You think the oceans are unexplored? How about the crust which is mostly under those oceans? How about below that? Good science relies on good observations, and you can't claim to know something you have never really looked at in detail. Useful as it may be at times - inference isn't that far from speculation, and speculation isn't science. Fun as speculation may be, it's not much better than guessing.
If you study mass extinction events through time you notice a pattern not just with increased volcanism but with atmospheric C02. What is typical in many of these events is that volcanic activity leads to a rise in C02, which in turn raises temperatures, which then seems to lead to prolonged volcanic activity. So it appears there may be some sort of feedback loop going on between the rise in temperatures and volcanism. Some of these events have lasted nearly a million years. It may take centuries for the crust to respond, or it may not, but either way this would be a catastrophic consequence of worldwide temperatures increasing. In the long run, and maybe even the short run, rising seas may be the least of our worries.