yes, the more popular Linux becomes, the more malware will be written for it, no doubt
how Linux is perceived is up to us as a community. There already are immutable distributions and filesystem snapshots, but will we advise them according to user’s needs or just send everyone new to Linux straight to Arch and arcane magic. The latter has been happening for ages now, but how big a phenomenon it is, I have no clue
Depending on what you mean: