420 Yeah

85% block full woohoo yeah!
https://bitcoinfees.21.co/Which fee should I use?
The fastest and cheapest transaction fee is currently 40 satoshis/byte, shown in green at the top.
For the median transaction size of 258 bytes, this results in a fee of 10,320 satoshis.....
Fees are at just 0.04 USD for urgent first block inclusion. And you can go down to 0.01-0.02 USD if you are willing to be included in the next 2-3 blocks instead of the next block.
So there are tonz of crap added every second that evidently aren't in any rush to get quickly validated. This means that whether 100KB, 1 MB or 10MB, it doesn't matter. A spammer can always fill them with junk as long as there are willing miners to process near zero cost txs.
With the fees for first block inclusion being at 0.04 USD, and +2/3 blocks at 0.01-0.02$, we have a near-zero-cost tx situation which allows near zero cost spamming / bloating etc, especially for low-urgency "transactions".