However, pruned nodes already contain a lot of useful information. For example, each pruned node can verify, if a new incoming transaction is correct or not. That means, each pruned node contains a full UTXO database. And very often, what users really care about, is not the full history, related to some address. Users often just want to observe only some unspent transaction outputs, and not dig into the whole history of past transactions, and spend transaction outputs. All of that leads us to the idea from the topic: having UTXO explorer, instead of block explorers.
A UTXO explorer would be suitable for looking up account balances,
but not transaction history.
This might be fine for applications that don't require it, but let's be honest here. Nearly every major crypto program deployed to the internet has some sort of capability for checking whether a user has paid, and for that, it is required to check for a transaction containing a particular destination address.