Many still don't understand how Dangerous dusting attack could be.
Or how UTXOs work. Sadly One can't limit what comes into their wallet
The best is to either use different address or keep your address private.
Coin control is underrated, many are not even aware of it's benefits.
It's so easy to taint a coin but no exchange will hear your plea. Free money for them.
Bitcoin transaction fee is based on Vbyte and not byte. You are going to be paying sat for every vbytes in your transactions.
I recall then when I usually read some post then That uses bytes including satoshi whitepaper
While mempool uses vbytes
Well turns out it was changed in 2017 during the introduction of Segwit.
Now in legacy address
1byte = 1 vbyte (since there's no witness data)
Segwit
total raw bytes > total vbytes ( since there's witness data)
Hence like you said why fee is cheaper.
you are going to be saving fees on v2 (bc1p) than if you are doing the transaction on v1(bc1q)
There's no Segwit v2. It's 0 and 1, which you missed Up as 1 and 2 respectively.