The late Philip Jose Farmer loved Burroughs, and while the sci-fi in Burroughs is much less plausible (ahem) even than most sci-fi, and the writing never quite emerges from the pulp level, Farmer noted that any writer who can create the most recognizable character in the history of literature cannot be taken lightly.
Lord Tyger by Farmer is weird, weird book. A sort of deconstruction of Tarzan, of how you could actually get something in real life close to ERB’s vision. Not for the squeamish, if I recall he has his character having sex with the gorillas.
https://en.wikipedia.org/wiki/Lord_Tyger
Freegards