Management at WBR knows exactly what it is doing. For a while, it even acknowledged it was violating T&C by paying $100 comp to those who complained. Not clear whether they're still doing that.
Sadly, since Marriott is sole arbiter of its own rules, if Marriott says a gross sugared pastry qualifies as "breakfast" under the T&C, then it does. Since we are arbiters of our own hotel spend, we have the ability to direct it elsewhere.