I find it strange that Lotto is not riding the Tour of Turkey where there are sprint opportunities for Ewan and GC possibilities for Sepulveda, instead of Romandie - I understand Romandie has got weaker over the last few years but It will be tougher to get results.
The full list of teams for ToT has not been announced yet, so they might still be riding it.
Tour of Turkey also is .1 now, so it's not like there are many points to win. In fact, with a stronger team they'd probably score more in Taiwan.
And as discussed before, in many cases it's also about money. At the Tour of Turkey it surely weren't the great roads which used to attract all those star sprinters. Maybe they are less interested in a PT now, while some sponsor in Taiwan was willing to pay for the trip.