This would be extremely bad. I don't know where to start.

• One mining pool would gain enormous advantage. 100 GB everyday is 700 MB every 10 minutes. Verifying an ECDSA signature takes about 1 millisecond on modern CPU. With just 4 MB block size, there can be about 7000 transactions every 10 minutes. If each has just one ECDSA signature, it takes 7 seconds to verify the block. With 700 MB block size, it'd take 175x as much time; 1225 seconds, which is 20 minutes. The mining pool with the most hashrate would render the rest unprofitable and gain all the hashrate.
• Spam is taken to the next level. People can now embed entire movies on-chain, which can introduce legal problems, and with a few large mining farms owning all the nodes, it'd be much easier to shut down the network.
• There is no fee market competition. All transactions paying 1 satoshi have high-priority, until there are more than 800k transactions unconfirmed within 10 minutes. This renders the system unsustainable over the long-term.

Being pedantic here, but there are more than 50,000. The 18,500 are listening nodes.

I see what you did there, but here's the difference: In the former, you have the option to use Bitcoin with no trusted third parties. In the latter, you may have self-custody, but you're forced to trust third parties (or realistically, practically forced).

I believe Bitcoin should be accessible with no trust required, and thus, I stand with the former.

People expect Bitcoin to scale through second layers. I don't think there are a lot of people aware of Bitcoin's history, believing it'll solve the problem by tinkering with the block size.