The situations involving the removals of Snake River Falls and Vortex are vastly different. Cedar Point stated that Snake River Falls was removed "to make way for future expansion", so it's highly likely that the park already has a plan for that area. Last time Cedar Point said something like that was when they announced the removal of Wicked Twister, and we know that was removed to make way for the Boardwalk expansion with the Grand Pavilion and Wild Mouse.
For Vortex however, that was removed primarily due to the high maintenance costs it would've required to keep that ride operational. There was no replacement planned for Vortex, as the park was in the process of building Orion by the time they decided to pull the plug on it. It's also worth noting that a potential replacement for Vortex was likely delayed even further because of the pandemic that affected the entire amusement industry in 2020.
Although Six Flags has already announced replacements for Kingda Ka and La Vibora already being built for 2026, some of the other coasters that closed in 2024 might have to wait a bit for their replacements. I imagine the Anaconda plot in particular is going to remain vacant for quite some time, as that was removed in almost the same fashion as Vortex. (Both Arrow loopers that were removed due to maintenance costs on years both parks were in the process of building new B&M coasters next to Flight of Fear) The main difference being that unlike the removals of Anaconda and pretty much every Six Flags coaster that closed for good in 2024, we were actually told of Vortex's closure beforehand.