Let's not please. That's a rumour I believe personally to be ridiculous.
To get back on thread - she could be successful with a podcast, she has a pleasant voice to listen to (when she doesn't put on that affected vocal fry), she just needs to find something that works for her. It's a very saturated market and IMO to make it work you have to find a subject you're really passionate about - she hasn't done this yet. Will she? Who knows, but it's not easy to do.
As to featuring both Lilli and Archie's voices on her IG - I find it annoying. It's a complete own goal for her - if you make a plank of your advocacy the online safety of children online and are trying to limit children's access to SM, DO NOT put your own children on. Only showing glimpses is not protecting them. It snacks of monetising them and I find that very uncomfortable.
As to Lilli's voice she sounds like she's a bit choked with the cold.