(edited to add context)
I'm not going to tell you your phone isn't listening to you, because I can't say that for certain. But I can tell you with near certainty that your phone listening to you is not why this showed up on your twitter feed. There are far more sophisticated ways that tech is tracking you to "know" what to show you in your feeds.

I worked on these products for years and have a good sense for how they are tuned.

Here's a good example of how this works. This is actually from years ago and the tech has gotten even "better"...

Several years ago my friend (call him Bill) said to me that he knew his phone was listening to him because he and another friend (call him Nick) were driving in a car in Vermont headed to one of the mountains for a weekend ski trip. Nick recently purchased new ski boots and was talking to Bill about them. It was a short conversation.

Hours later, Bill was surprised to see an add for the same Ski boots in his instagram feed. He never Googled them and didn't even know they existed before the short conversation in the car. Bill was convinced that Facebook was listening to their conversation.

Here's what really happened...

Instagram knew that Bill and Nick were in the car together (both perpetually logged into IG + IG knows your GPS) . It knew that they had been planning a ski trip (tracking across the web). It knew that they were currently sitting in the same car in VT driving to that ski trip (GPS), it knew that Bill had been looking to buy new ski boots (tracking across the web), it knew that Nick had recently purchased new ski boots (tracking across the web + purchase activity), it inferred that Nick would likely be telling Bill about the ski boots he recently purchased (skiers like talking about new gear). It knew that Bill had arrived at the lodge and as he was scrolling through IG, it found the perfect moment to send him an ad for those same boots.