Bulk upload

You can upload as many as you want, but you are limited to submitting to the moderation queue. And no, per se, submitting to the moderation queue is not considered as spam, but if the assets are too similar, that will be spam. And spam assets start with the fourth similar image but to have consequences for account blocking, you need to submit more similar images. There is no published threshold, but I suppose it is nearer to 50 assets than 5,000 assets.

As for spam, you will need to study this carefully, as it describes very well, what spam is: https://helpx.adobe.com/stock/contributor/help/similar-vs-spamming.html

So now to your 80k assets.

You say that you worked for months, so let's assume that's 6 months. 6 months is 183 days, that's 4,392 hours, but you have to sleep, eat, do other things, let's deduct 8 hours per day for that.  That leaves you around 2,928 hours of work, or 175,680 minutes. That leaves exactly 2 minutes 12 seconds to check each asset for errors and similarity. I doubt that that is possible. So, what lets you think that your assets are high quality?

(As a side note: I know of a contributor with only 60,000 assets who got blocked, because of some violation of the terms. Walking through all those assets again, to see what assets were in violation, is an impossible task.)

Spam is too many similar images, which is defined as more than 3 of the same theme that are largely the same.

That is a LOT of assets. It took me two and half years to submit nearly 5000 AI assets. Without actually seeing your images, if you have 80K assets that you believe are ready for submission, then I suspect there are a number of very similar images, which would indeed be classified as spamming. But again, I haven't seen your images. I know it is possible to accumulate a lot of AI assets prior to becoming a contributor, but it does sound like you may need to take care going forward.