She doesn't link random junk. She uses the "Tested by Roo" approach. For 30 days, she tries a product (e.g., a robot vacuum). She documents the failures (spicy: it ate a sock) and the successes (sweet: clean floors during a meltdown). The affiliate link is in the final video. Her conversion rate is nearly 12% (industry average is 2-3%).
You don't have to be everything to everyone; you just have to be "Mommy Roo" to your fans.