You might have emotionally immature parents if…

They see things in absolutes without gray area, as in all or nothing, black or white, this or that, good or bad.

They present persistent self-centeredness in how they can't comment on most things without relating it back to their experiences, much like a child would; they can't easily put themselves in someone else's shoes if that person is fundamentally different from them (nationality, race, gender, orientation, political party, regional lifestyle, religion, etc).

They cannot communicate in a literal, clear, straightforward pattern.  There has to be an assumed meaning behind phrases and often the least charitable interpretation is applied.

They lack self-awareness and find it difficult, if not impossible to take clear accountability for their actions and decisions.  Lots of excuses.  Lots of reasons why it couldn't be on them.  And if responsibility it taken, it's for something tertiary and minimal.

If you were to point out a flaw of theirs or a specific action they took that caused you harm, you would be met with an ocean of excuses and likely a sad story about them to ensure we are only sharing emotions about their situation.

They do not have close familial or adult friendships.  Relationships are more about appearances and going through the motions.

Life is lived on autopilot, and any variation from the norm is deeply jarring and often met with bewilderment and dismay.