Do I need to redirect deleted products?

Question

Search Engine Optimization

At work, they tell me to delete 300 products and redirect them to the parent category. They are afraid that the site will sag in the search. Is it correct?

Answer 1

If the goods are no longer restored, then do a redirect.
Otherwise, 404 pages will appear in consoles and behavioral ones will drop. People will come from a search, get a 404 error, and immediately leave the site. It can especially affect the issuance of Yandex.

Answer 2

That's right, the traffic will drop.
You do not need to delete the product, this is your traffic, just put "Out of stock" or "Coming soon" and so on.
And so you need to go into more detail.