Yes those are their actual names, after the backlash they never appeared in published comic(these are from sneak peaks at a then unreleased new New Warriors series) apparently their origin involved inhaling 'internet gas'
In a better timeline, "Snowflake" and "Safespace" would be names of two characters in an ultra-meta-post-ironic MS Paint looking parody fanime by a non-binary person satirizing liberal satire of chud onejokes while also satirizing the chud onejokes themselves. Unfortunately, in this timeline, Marvel got to the idea first.