That’s not correct. First, you said “could be” but in reality is IS automatically renewed unless either party cancels in writing at least 20 days (tenant) or 60 days (landlord).

The notice was for price increases for future renewals. The automatic conversion of the fixed lease to a month to month lease is considered an “automatic renewal” - as stated in the clause shown by OP. The notice of rent increase would apply to the month to month automatic renewal.

It is valid. I’m not saying it’s not shitty, but according to RCW and CoT law it is.