I think that Niantic giving more Golden Razz Berries to us is that they want to make more money

TL;DR: Golden Razz Berries will be the real defenders in the current meta.

In the current raid-based gym system, people attack gym for PokéCoins to buy raid passes.

However, Niantic implemented a system that gives you several Golden Razz Berries as free rewards, as long as you can defeat the boss.

With these Golden Razz Berries, people can catch legendaries slightly easier. But Golden Razz Berries have other uses: fulfilling a Pokémon's motivation.

A wall of Blissey, Snorlax and Chansey can threaten some players, since the potion drop rate has decreased significantly. With Golden Razz Berries, the attacker can burn through half of his/her potions and revives even by only taking down one gym.

To get more potions and revives, the attacker needs to spin gyms. But what if the attacker lives in an area with very few gyms? He/She has to do raids to get resources.

Now there is one problem: people will soon start throwing Golden Razz Berries at Pidgeys and Rattatas. Meanwhile, it costs the attacker's phone battery, and he/she can be tired of battling these weak things again and again.

However, the defenders can stack up Golden Razz Berries quite easily, at least 4 for doing a tier 5 raid, and averaged 5–10 per raid.

That indicates that the attackers have to spend more time and resources to get PokéCoins. Defending is a problem, but you can encounter more problem when attacking, if you don't have a gym with gold badge near your couch.

Yes, multiple attackers can take down a 3000 CP Blissey easily, but unless you use the "2/9" method or battle it every 30 seconds, defenders have time to feed some Golden Razz Berries.