Charging speed isn't the be all and end all of battery degradation. It's a lot more complex than faster = hotter. There are many videos about this topic, but long story short, there's ways to counteract this like splitting the battery, having charge IC'S which strictly regulate voltage, having large amounts of battery cooling and so on.

You only need to look at most IPhones to know charge speed isn't everything. Many of their battery health's are in the 80's after 2 years, despite charging incredibly slowly. Why? Because most people charge it over night from 10-100%, usually on their bed or under their pillow, which is incredibly damaging to the battery.

You could write an entire essay about battery health, but higher wattage does not necessarily mean "explosive" or "damaging to the battery".

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Fast charging hasn't been an issue for my OnePlus 7 Pro that I've been using for the last three and a half years. It uses the same VOOC charging that this phone from the article is using. VOOC works based on amperage, so the charging brick is the one getting all of the heat versus Qualcomm's method of hiking the voltage.