I always look forward to a new BF game - they are all good (with the exception of Hardline, granted) way back from 1942 which switched me off SOF2 as the MP game of choice. I bought SWBF whenever it came out and it was ok as a “christmas game” I didn’t bother with the second as I prefer my wars “realistic”
As for the bah humbug, you would look silly if you applied the same to a series of films or albums Imagine saying that Policy Academy 1 was great but the remaining 7 were cack* and you kept going to the cinema each time just getting dissapointed!
*this statement is true apart from the bit about the first film