My 2 cents as I main Aeon:
Why is Aeon disliked to play and play against.
Aurora.
More unit babysitting (from both players).
Different gameplay style.
Specific knowledge required.
Unsatisfying air units.
Mercy.
Every Aeon unit feels like it counters 1 thing whilst being countered by 3 things.
Wobbly missiles which can sometimes miss stationary targets.
Chrono.
Obsidians never die.
Volcano is the best and worst TMD.
Paragon. Useless (usually) or OP but never neither.
Why is Aeon unfriendly or inaccessible to new players?
The only faction that feels like a different game from the rest.
Which Aeon units highlight the "unfun" aspects of Aeon?
Aurora.
Mercy.
CZAR.
Which Aeon units highlight the "fun" aspects of Aeon?
Obsidian.
Mercy.
CZAR.
Aeon. The only faction where my enjoyment is inversely proportional to my opponents enjoyment.