Is this one of those 'inconvenient truths'? Is this smoke without fire, or no smoke at all? Is the cost of acknowledging the problem so prohibitive that it stands no chance? Eternal denial? We still do not know the real long term truth of solar radiation. There is not enough scientific historical data. The problem might be if either are ignored so that scientific data is never collected over a long enough period. It is shelved because the solution is too expensive. It becomes a risk/cost consideration.
Remember the poo-pooing (rubbishing) when health issues from leaded car fuel was first mentioned. The petrol industry thought it was a daft notion; until it was medically confirmed. Same with DVT and cattle class pax. Same with salt quantity & other additives in fast foods and children' health. Same now happening with sugar in everything. One could argue that these latter issues were solved because the costs were reasonable.