As seo service specialists we have to worry about the ever changing landscape of search engine optimization.
New algorithms and algorithm updates are just a part of stress each one has to endure and the communication with customers to let them know that their drop in landing is not due to any penalties but a natural accurance needs another level of customer relationships.
But all those aside, one thing as professional you should not worry about is the quality of the web service you get.
A proper seo hosting service not only provides ips from different range of c-classes but it also follows the latest user experience metrics.
Of 12 most important SEO metrics, the ones that are directly affected by the web hosting provider are, location, TTFB and IP classes.