It's not worth forbidding players from taking Ducks from the Hive, as they simply need to collect them and find them in the Treasure Zone, meaning both players have roughly equal chances of doing so.

Also, it's not worth forbidding players from taking Canned Goods (there aren't many of them to begin with) in the Treasure Zones.

However, whether or not to allow players to collect Angels from Canned Goods on "regular" respawn points is something that can be discussed, while still allowing them to defeat Griffons for experience.

Regarding the ban on collecting Angels on respawn points.

Added 32 minutes ago

In general, all this talk about how the opponent got a lot of Canned Goods and Hives (I'm not denying that this happens, but it plays a decisive role in no more than 10%) is just whining.

I don't know, Pasha, you've underestimated the 10% dependence of Victory on Canned Goods and Hives.
From my experience, they have a decisive impact of at least 60%.
Also, with these factors, you'll be able to take the Undead, Artifacts, and other useful things faster, and ultimately defeat the player to whom this loot wasn't distributed.

Off-topic:
And it's true that luck is needed in Heroes! Sometimes you get discouraged when you analyze games and realize that the outcome of the game depended on some "small step" that wasn't taken correctly.

Sometimes, I even have thoughts that when you do something "wrong" in the "real world," you're bound to make a mistake in the "game," in addition to the influence of objective factors.