More likely they’re waiting for it to die down so they can get back to business as usual. There’s no way to overcome the roar, at present.
I think they’re doing desperate polling, and not liking the results. They, the RATS and MenSeekingMen have actively avoided mentioning Cruz’ name since the midterms, when they realized he was a big chunk of getting democrats to crossover.
Silence usually denotes panic or doing something bad you want nobody to notice.