I see what you did there. Although I expect the total number of Bitcoin transactions excluding the ones spamming data to be less than the total Litecoin transactions.
Approximately 20% of the total Bitcoin transactions were 100% of the Litecoin total. For this to hold true, more than 680,000 Bitcoin transactions have to be "spam" according to you.
I can't (easily) find hard data, but I've seen many blocks that are for 90% filled with data transactions. I call (almost all of) those spam. In transaction amounts, the small data transactions make up an even larger percentage. So 80% spam transactions seems plausible to me.
But more importantly: I don't want to have to move to altcoins, and I'm guessing I'm not the only one. I do have some small amounts for small transactions, but I'd prefer to use Bitcoin for that.
If to accomplish it, you'd have to turn Bitcoin to an altcoin, would it be worth it? Because, that's what you'd do by tinkering with the block size. This risk has already been taken. This solution has already been implemented and tested by many altcoins. This community even had a cultural war a few years ago, and split. Wouldn't it be more appropriate to use other networks that align closely to your preference?
What's "Bitcoin"? I remember blocks being
temporarily limited from 30 to 1 MB by Satoshi in the early days, to reduce spam and blockchain growth.
Ever since the creation of altcoins, it looked like they are only created to make the creator rich, by taking market share away from Bitcoin until it's high enough to sell. All that market share could have been Bitcoin. I'm surprised to see you argue that I, a Bitcoin user, should move to some shitcoin, just because some spammer created a shittoken on Bitcoin. I just checked Mempool Goggles: at least 90% is data spam. The Bitcoin users who now switch to some shitcoin won't come back to Bitcoin, and the merchants who gave up accepting Bitcoin because of high fees won't restart doing so when fees drop
temporarily.
Bitcoin needs a long-term scaling solution with reliable transaction fees. I hate to say it, but I'm glad my bank doesn't suddenly charge me €50 when I pay at the supermarket.