“Apple Stores to Drop Mask Requirement for Customers in Many U.S. States”此句语法是否有误

> The grammar of headlines is often non-standard and they can be difficult to read. The main features of the grammar of headlines are the use of a series of nouns and the use of ellipsis (leaving out words which are not necessary)

> Headlines often use the to-infinitive form to refer to future events

Source: https://dictionary.cambridge.org/us/grammar/british-grammar/newspaper-headlines

@mons 很用心的解答，感谢