I think the SOA/microservices distinction has to do with the patterns of architecture more than anything else. (For example, the enterprise service bus is... well, ignore that if you squint it looks a bit like the service mesh and Kafka in a sufficiently complex microservice system.)
There’s no distinction anymore , just like DevOps is now a role not a movement, and hacker is a criminal not a maker. You can’t fight the natural language evolution when it’s buzzwords that people get hired on.
Problem is that SOA has been around for decades whereas “microservices” sounds hip and cutting-edge