That sounds like a perfect match for a meta study do you have any? I am very dubious about your conclusion. I am basing this on work I did in high school on this so I really have no sources for my claim.

EDIT did some more searching and have not been able to finding anything supporting you claim. People have not been very alarmist about sea levels.. 7500m by the year 2500 in Waterworld does not count.

Systems are complicated. Given there are numerous predicted outcomes (it's not just about the actual measured sea-level rise, after all) and many of those predictions are coming to pass far earlier than hoped, it might be worth having an open mind to the fact that sometimes people who devote their lives to studying something might be worth listening to.