Rereading what I typed, uhh, forget my stupid poetry ;p
To summarize: kevtris stopped providing artwork due to lack of time AND due to criticism. Back then, not everyone 'agreed' with the artwork. Unfortunately you happened to be the last person to this list and therefore added bias.
Lack of artwork files results in lack of playable VFD handhelds in MAME, results in the people providing handhelds for dumping(Rik) losing interest, results in nomore of these games getting dumped and emulated.