I believe there to be a reasonable chance of some people living much longer into that 150 - 200 years range.

Would I want to? That is a whole other question. There is a significant difference between living (being alive) and Living an active, useful, fulfilling life.

Honestly, I would not want to live much beyond being physically and mentally able. I am now 37 and have a long life ahead of me before seeing just where I reach, But I very much look forward to seeing the advances that come in the next few decades.

Just speaking to your quote of current and future centenarians though, It looks like the potential for exponential growth over the longer term beyond 2050. Depending upon the changes we see in the world.