It's not really wrong. There are English accents (such as Received Pronunciation) where an "ee" before an "r" is normally pronounced with an [ɪ] like in "wit". In any case, even if you pronounce the "ee" as something else like [i], "Veert" is probably still the sequence of letters that maximises the likelihood that an English speaker will understand by it something close to the true German pronunciation ([vɪʁt] or [vɪɐt]). "Virt", for example, would be read by most people as [vɜrt] (rhyming with "hurt") which to my ear is further off from the correct pronunciation compared to something like [viət].
