Truth Social runs on the same Soapbox frontend as Poa.st, NCD and others. When someone creates a new build, that changes the signature of the file that is served by the server, and in this case prompts you to basically hard refresh to download the latest build to your device.

Without that feature, people would be receiving different things at different times. For example, on the old frontend, a change may not propagate to all users at the same time based on how their browser works. If you hard refresh, which would be required to pull the latest build, it would be fine. But, some people do not know when, or how to do that and that's generally not feasible for the layman on mobile devices especially.

It's really not that big of a deal.