So even though you personally use DDG, surely there are still vastly more searches on Google than on all other search engines combined so there's no immediate danger of dilution.
I do have a question though for people familiar with trademark law. Why can't they just do away with the trademark dilution rule? So what if I want to go "rollerblading" on pair of K2s [1]? Why should Rollerblade be at risk of losing their trademark? Who is being served by this rule? It just seems to incentivize litigious behavior.
[0] https://gs.statcounter.com/search-engine-market-share (note that they easily beat all other search engines combined
[1] https://www.goodhousekeeping.com/health-products/g46167391/b... (Good Housekeeping has no problem genericizing rollerblade all throughout this article. Perhaps unlike Velcro, Nordica is ok with this?)