That's a good point but I'd argue that the newcomers should first choose a decent wallet and stick to that for fee estimation instead of using any third party webtool.
I think the problem with that is that almost every wallet and website suggests inappropriate fees, especially those which you see newbies talking about the most, such as blockchain.com or bitcoinfees.earn. The only two fee algorithms I put any faith in are coinb.in and mempool.space. Even great wallets such as Electrum often result in newbies overspending on fees since they don't understand the ETA/mempool/static options.
Oh cool. All they need to do now is add the search features for blocks, transactions, and outputs which blockchair ruined on their recent update, and they'll be the perfect explorer.