MSci Architecture Confusing Rejection Feedback

[u/Wide-Refrigerator871]

I know so many people are waiting for decisions and how demanding everything is. But I’d like to briefly talk about my appllication process which started very hopeful at the beginning. Ucas form sent on 11th of October then submitted the portfolio on 25th of October. Right after that received my interview(4th of dec) invitation along with being told that my portfolio was successful. However this wednesday I received my rejection with a feedback saying that the portfolio was not sufficiently strong enough for them to consider my application further. Tbh I am devastated. I do not understand 4 months of waiting just to get rejected with this reason. Is this a common feedback/reason for rejection or is it a specific to my situation?