Frankly, this is very unsurprising.
The younger generation has been dealt a terrible hand. Before they were equipped to deal with difficult topics, they've grown up speedily by watching on their smartphones and in society the rise in the extremes of life - addiction, suicide and self-harm, pornography, cancellation, obesity, neoliberal greed, etc (gosh, sounds a bit like the deadly sins) - and some have rightfully concluded that it's no way to live. So they find meaning and solace in the gym, in teetotalism, and in being straight-edge, in kindness towards the planet and animals through increased veganism and environmentalism. Healthy body, healthy soul, healthy mind. The young generations are traumatised from a short lifetime of explicit content thrust on them from an obscenely young age and are looking for ways to heal and soothe. Religion gives them a reason to pursue a purer life. And Christianity, having been out of fashion with the elites for a while and much-derided, is now ripe to be rebelliously claimed as fashionable once again. Everything occurs in cycles.
These younger generations have strong morals and a desire to enable change - in a world that's made them financially powerless and in a society that only values money. They have no money but a desperate need for stability in a country with alarmingly fast-changing demographics. They've grown up with plastic people on social media being fake and hawking materialism as a lifestyle. Then there are the perennial struggles for jobs and homes. A sharp rise in income inequality. You may be poor but religion is free and has always, like the socialism they so admire, condemned the rich. It also offers a shortcut to community, which isolated, tech-addicted youngsters are desperate for. Religion lets them be useful in their powerless world, by getting involved in charity and local issues. If they're the "woke" type of youngster, they can also just call themselves religious the same way they can stick on the wrong pronoun and expect the world to be awed by their uniqueness. Either way, the lives of younger generations will be one of turmoil and unfairness. Their elders have let them down badly. In rocky and uncertain times, no wonder they turn to traditions and tales that have survived millennia.
I expect church-going to rise significantly over the next decade. A lot of it will be a direct response to the increase of Islam in our cities, and its strong in-built community. There may be some jockeying for position going on, after decades of Christian complacency, now threatened by the "new" kid on the block and with a sudden need to stop slouching and show up. Either way, interesting times ahead indeed.