It's not MIL-CD's damaging the laser, but data burned on recordable discs. For a laser (any laser) it's harder to read the data from a burned disc, then a pressed disc. Also certain copied games have a shitty sort-order of the files on disc, stressing the laser even more (that being said, there are also a couple of original games out there with a highly unoptimized order).
To answer your question, ALL paid homebrew / indie games for Dreamcast have been released as a pressed disc on a CD-ROM (instead of SEGA's proprietary GD-R disc).
Also don't confuse .GDI (raw dumps of GD-R discs) with the type of disc GD-R (GigaByte Rom)