Can anyone help me with this song?



Lyrics: http://lenslyrics.ml/roadrollerstampede.html
Click on "English" to see draft translation.
Click the play tab to listen, but it might not add much to just reading the lyrics.


The bits I'm struggling to understand are:
  1. 既読の並んだ同調圧力 (kidoku no naranda dōchōatsuryoku)→peer pressure in a list of read messages (?)
  2. 作り手機械と思ってるヤツ (tsukurite kikai to omotte'ru yatsu)→those who think they're a building machine (?)
  3. 悪者決めつけ衰退論を (warumono kimetsuke suitairon o)→theory of decline of being branded as baddies (?)


Does anyone have any suggestions as to what these things be referring to? Any feedback welcome!