And some people, apparently considering themselves witty, love to bring things like that up, along with hogsheads and rods and some other seldom used (archaic?) units. That still doesn’t make metric base units any more sensible.
The length of the path traveled by light in a vacuum during a time interval of 1/299, 792, 458 of a second? That really seems so reasonable and logical? No, it doesn’t.
Any advantage of the “metric system” isn’t found in the International System of Units (SI). Any advantage, such as it is, is tenths. You can divide anything into tenths.