Did you actually bleed it or just pump the pedal a few times with the cap off the reservoir? That's not the same thing.
To bleed the clutch you have to undo the nipple on the slave and press the clutch in. Tighten the nipple, release the pedal and repeat until all the air is out.
Heavy clutch is usually a shagged clutch and I don't know how a needin'-bleedin' clutch would be heavier than one that's fully bled. In theory it shouldn't make any difference.
When the clutch plate fingers wear you get a groove in the ends that make the release bearing "drop" into it, further away from the release arm. This reduces the mechanical advantage you normally get from the release arm pivot, so your clutch feels heavier to lift.
As the clutch fingers wear you may lose some of the finger ends (actually they'll collect in the bottom of the bell housing..
.. and in due course the release bearing will wear through all the fingers until you have nothing left to press against (terminal "no clutch").
Until that happens it will all work. The release bearing whizzes round and it could be that it's resting on the ends of some good fingers and feels okay. In a few days it may work round and drop into a "hole" where there is a missing finger and your clutch will go "heavy" again.
Listen to the clutch when the engine is running. If you hear a sssskkk... sssskkk... sssskkkk then that's less good than totally silent.
Anyway.. you could be right and that pumping sorted it out permanently.. but it'd be a weird one for the book of Alfa weirdness..