There is no doubt that left aligned should be the only way texts should be presented. You are not alone.

Not being able to find the beginning of the next line can be frustrating. From the accessibility point of view, center aligned text is terrible since people with little reading disabilities won't be able to read it at all.

Even justified text, on online pages, can be hard to read for many people: WCAG20/Aligning text on only one side

I don't think that center aligned text is something recent: it has always been used in web design, mostly because, at a glance, it could be more visually appealing.