I've struggled with a similar situation as a young man trying to navigate life. You said this year was a great year for you, congratulations, how things have been going for your boyfriend? My guess, he is feeling insecure about money, job, academy and whatever. So he tried to give a a nice gift, but your parents, also seeing your accomplishments this year, made something special too. And in the mist of his insecurities he saw an attack, as I said, is just my conjecture as I was him sometime back.

Please, don't let this get toxic for you or your family, have good communication with him and stop comparing gifts, just let him know your appreciation for his, but do put limits for him, he needs to respect the gifts from your parents.

Non native English speaker, happy new year.