As e.m (#2) points out, the actual grave of Habakkuk is more likely to be the one so identified in Iran. Historicity is of limited importance to those who don't study history. Moreover, the trend he describes goes against the traditional Jewish focus on the living, not the dead. But this author inadvertently touches on a common tendency among fundamentalists - call it the search for sanctity.
The Jews are not alone in searching for something sacred, something holy. Christian agents of Constantine scoured the Holy Land for places that held religious significance for their faith, and no one knows how many of those newly sanctified locations, enhanced by places of worship, have any historic basis to them. Fundamentalist Muslims demonstrate a tendency to grant such sanctity to anything they wish to claim, so former Jewish or Christian or Buddhist sites are made Muslim.
But even those sites for which historicity is not an issue can be misused by those seeking a sacred connection to the dead. Maimonides burial site in Tiberias is an example. What was a poorly maintained site in 1984, attended to by only a local beggar or two, has been remade as a haredi tourist site. So of course it must now conform to haredi standards (gender separation, etc.) Funded by overseas donors, it now has a distinctive metal sculpture overhead to mark the site, and some educational material (Hebrew only as I recall) along the "mehitza" running over the tomb. It's hard for someone not of the haredi persuasion to be inspired by such a site.