Maybe that "scientist" got something wrong? I heard that the Sun will explode in 5 (million or billion?) years, but certainly not so quickly. And what's all this talk about extreme heat?! These are just silly prejudices. Specifically about our area: last winter, the temperature outside was -40! Although usually it's between -10 and -20. Last year was just an incredibly cold winter. And 10 years ago, in the summer, it was +45 in the shade. And this is in a village, 50 km from the nearest city.
There was also a program about culture, in which they mentioned chronicles written during the time of Ivan the Terrible. There is a mention of how cows were grazed in January. Back then, this was also attributed to some mysterious forces. And people often say: "Look! It's hot in the summer! It's freezing in the winter! These are anomalies!" We've always had unpredictable weather, sometimes it snows in winter when no one expected it, and sometimes there's a hot day. Enjoy the heat while it lasts, enjoy the summer. When have there not been weather anomalies? They are everywhere, and there's no need to make a mountain out of a molehill, saying that the Sun will explode. Well, it will be a good fireworks show to watch.