In modern-day Japan, although attitudes are slowly changing (largely in thanks to the influx of tattooed tourists flooding in each year), tattoos are still stuck with a bad reputation, and usually more “rebellious” or alternative Japanese people are the ones to get them. If we were to liken it to a western equivalent, it would be similar in reputation to face tattoos, or prison/gang tattoos. Even now in the west, face tattoos are considered more extreme, and prison/gang tattoos are often considered a warning sign.
If you have tattoos, particularly large ones, some may consider you to be dangerous, or an rebellious/anti-social person on the outskirts of society. For Japanese people who have more experience abroad or with tourists, they’re less likely to care and may even be curious or complimentary.
Because, let’s face it, if there’s one thing that motivates change, it’s the prospect of making money.