I second a therapist. I have had a relatable experience to OP which started off as small gripes with poor design to personal attacks. This became a major factor

I second a therapist. I have had a relatable experience to OP which started off as small gripes with poor design to personal attacks. This became a major factor of full blown mania and I ended up in hospital for months; wouldn't recommend it. Specifically if you see it as a personal attack, consider looking up "signs of reference". It is a similar concept where you are delusional and believe that written signs are specifically designed and aimed at you.