Alleged research at Cambridge never happened, however. In fact Cambridge psycholinguists have not only disputed the claim they’ve pointed out why it is wrong and demonstrates the assertion about letter ordering is false. Consider this:

A dootcr has aimttded the magltheuansr of a tageene ceacnr pintaet who deid aetfr a hatospil durg blendur.

That sentence follows the “rule” to the letter. But it didn’t flow, did it? The main reason is that the meme you reference was designed to fool you by preserving phonetics and providing context with enough correct words that you don’t actually read the words but assume them, and your brain tells you you read them. This is a big part of why vocabulary and syntax matters: it lets you not read words and still gain the understanding of the text. This is a big part of how speed readers do our thing: not reading the bits you don’t need to. And yes, at speed a misspelled word can cut your rate down by half or more.