A higher blocksize ceiling will cause extra strain on nodes if it is implemented. Sure, running a node doesn't take up much, but it will still try your hardware more intensely. Why not SegWit?

because if people stop doing normal traditional transactions and instead embrace segwit the real data is actually worse. im not talking about the bat and switch twisting data, im talking about the actual measurements of real data.
also if you continue to embrace blockstreams roadmap and do segwit confidential payment codes(CPC) the real data grows again.
here. a simple image for you

basically keeping the hard limit to 1mb(as blockstream wants) and then everyone doing segwit CPC transactions equates to 2.85mb for only 3800 transactions.
but if we had 2mb hard limit and stuck to traditional style transactions we can have 4000transactions per 2mb block.
so although blockstream tries to say that 2mb hardlimit bloats peoples hard drives. it is infact segwit and CPC that will
so although blockstream tries to say that 2mb hardlimit causes extrea processing. its infact segwit and CPC that will (imaging not only handling extra tx's but then trying to validate balances hidden inside a payment code that it needs to process and check)
so having a 2mb limit and sticking to standard transaction types is actually more beneficial. and yes libsecp256k1 can be used on traditional transactions without the need to make Segwit/CPC transactions. so a 2mb hard limit will be faster than people thought last year before libsecp256k1.
so relax. the hard limit is just a buffer that allows REAL capacity growth and controls the real data expansion. unlike blockstream features that can expand uncontrolled
maths is based on a normal transaction being on average 500bytesmaths is based on blockstreams projections of segwit 190% capacitymaths is based on blockstreams estimates of CPC adding 250bytes to a transactionmy personal opinion is to have 2mb+segwit to allow people the freedom to do proper bitcoin transactions OR segwit CPC bloated transactions, without contention, without any corporate control. and hope that people use their brains and do the transaction that suits them personally. rather then being led down a one way street