When they are content sites, yes. When there is ecommerce and other dynamic stuff - not so much. I'm often optimizing WP sites after the arsenal of the typical

When they are content sites, yes. When there is ecommerce and other dynamic stuff - not so much. I'm often optimizing WP sites after the arsenal of the typical developer - caching, redis object caching, etc - has been wiped off. The db structure and poorly optimized queries are a real pain.