They are not traditionalist because they have no traditions. They are not religious because they have no meaningful religion. They are not cultural conservatives because they no culture.

Which is why they are not true "rightists" at all. They are merely the least enthusiastic left. Actually, they are enthusiastic leftists, since nearly all self-identified "right" endorse most aspects of modernity and the sexual revolution. They are less far gone though in that they have some of the old-style tribal (ethnic) identity left. This is not very sincere or cohesive except for a very small core of dedicated individuals, and these can accomplish nothing beyond their immediate circles, given the prostrated condition of their base. The regime obviously sees this and views the right with contempt, judging by the recent acceleration of its assaults. But as, you say, it's an empty identity, and this is because the right no longer embody those virtues that once made their nation great. Only a husk or appearance is left.

The worthlessness of the modern Right can be seen in what they produce. They produce nothing of value. No good movies, no good music, no good software, no good architecture, no good anything. If they had a meaningful identity, based on tradition, religion, or culture, then they would produce things of value.

This is true, but maybe a bit harsh. Because culture is produced from the top down, and the right, such as it is, is excluded from access to positions of influence (and recently actually blacklisted as seen with the "cancel" movement), conservative or traditional-tending people can not really be expected to produce the cultural artifacts you mention. They are under attack, and that is not the time for producing art or software, at least for most people who are not already dedicated to such things. What the right should be doing is building communities, networks of trust and solidarity that will be in place before things get really rough. Since the right did not do this all these years while the left was advancing its agenda, the right is doomed.

The reason I think it's harsh though is that people who think of themselves as "right" or "conservative" do not tend to be activists. They are the opposite of the left, in that they want to be left alone, while the the left is meddlesome, intrusive. The left gains power parasitically, at the expense of normal people, centrists, conservatives, or whatever you want to call them. While the right has nothing to counteract this. By the way, I think this is one of the main reasons why cultures tend toward entropy and eventual collapse on a fairly regular schedule. Conservatives always face an uphill battle against the forces of decay.