Depends on the client I think. Primal doesn’t seem to show it but Damus does.
I use @Habla News to post my newsletter each week and it shows like this in Damus.
I guess the best way to allow for visibility across platforms is to create posts natively in Damus, Primal (or equivalent apps) and cross reference to long form content on Habla or Highlighter as a workaround.