"[1] It also marks the first Mudhoney album[6] where drummer Dan Peters takes a more active role in the songwriting, contributing riffs and chord progressions to the tracks "Human Stock Capital", "One or Two" and "Little Dogs".

[18] Glide Magazine notes unexpected moments in the music, such as the inclusion of love ballad "Little Dogs" and the publication sums up the review that the recording is "a fun alternative album that channels political fury into a fiery collection of aggressive rock".

[12] Editors of AllMusic Guide scored Plastic Eternity 3.5 out of five stars, with critic Mark Deming commenting that the band continues to be innovative decades into their career and "are capable of surprising us (and themselves) thirty-five years in, and judging from the results, it won't be the last time they'll pull that off".

[3] In The Irish News, David Roy informed readers of Mudhoney Day, encouraging them to listen to the band's music exclusively for 24 hours and noted the diversity of this release, with tracks that "switch[...] off between slow ‘n’ woozy and loud 'n' frustrated to fine effect".

[20] Online music venue Bandcamp highlighted this release and reviewed Mudhoney's catalogue, calling this album "a ripper that reaffirms their place in the annals of American hardcore and punk rock".