If one reads SN 55.7, they’ll see the Buddha directly addressing householders about conduct and Right speech, including silliness and nonsense (idle chatter) in the same vein as he instructed monastics in AN 10.176 and AN 2.11. There are lots of suttas about Right Speech. Right Speech is early in the N8FP for good reason. It’s an action to curb one’s attention away from sensual and frivolous matters, to incline the mind towards wholesome thinking and living.
Householders and lay people do converse and speak about lots of things disconnected from the Dhamma, that’s part of living as a non-monsatic. The Buddha didn’t disparage householders and lay people, he encouraged them to follow the teachings in a way that inclined them to live wholesomely. But social media is specifically designed to hook a person’s mind into endlessly following drivel and sensuality. We know that it’s intentionally made to be addictive and harmful. I think it’s wise for people to understand the downside and danger of social media.