Is Google Font Taigi yet?

No.

Che-sī chi̍t-kóa Tâi-gí ê bûn. Google Fonts ê chi̍t-ē chin tōa ê būn-tê sī, i ē kā peh-siaⁿ ê jī-goân the̍h-tiāu. (This is some text in Taiwanese. Google Fonts has a major problem where they remove the character for the 8th tone.)

Chi̍t-ê blog iōng ê jī-thé (Equity) mā bô-hoat-tō͘ piáu-sī peh-siaⁿ, chhin-chhiūⁿ: (The font used by this blug, Equity, also isn't able to display the 8th tone, like this:)


chi̍t

Here's a previewer:




chi̍t

In the case of TASA Orbiter, the font has support for it, but it got removed by Google Fonts because of complicated optimization reasons which obviously also is a result of bias against some languages. (I understand why it's hard, but it still is bias.)