Despite the fact that fewer and fewer phones support this jack. We have seen three new iPhones without this plug and rumors that the two Android phones are the most anticipated year, Pixel 2 and Pixel 2 XL will not have this classic plug. Many other Android phones like MI Mix 2, HTC U11 are the same.
Can understand the desire to simplify the design of the phone, making them easier to resist. But the phone can still be waterproof even if they have a 3.5mm jack. Take a look at the Galaxy S8 and Note 8 as an example. They also don't need to be thinner now.
If you don't believe the 3.5mm headphone jack is still the best headphone jack, ask Apple. Even Apple's Beats Studio3 headphones, the largest and latest brand, also have a 3.5mm jack. Mostly they are still wireless but if the battery runs out, guess what happens? You can still use the wired connection: dongle to connect to iPhone 7 or 8 and another dongle to connect to the Pixel 2.
Everything seems to be ineffective, although Apple has 'bravely' removed the 3.5mm jack. Many people really expect phone manufacturers to bring the headphone jack back.