I'd prefer having more nodes with the entire blockchain rather than nodes which only stores the last few GBs of the blockchain which really wouldn't benefit the network more than the others.
We can only argue that more
Archival Full Nodes are going to benefit the network only if there is a shortage of them that makes syncing hard for new nodes that come online or puts extra pressure on the existing Archival Full Nodes.
I don't think this is the case since we have enough of them to supply the historical blockchain.
The Pruned Full Nodes are benefiting the network and contributing to decentralization by doing what any full node would do: enforce consensus rules.