If you really are that lazy; arduino.cc and arduino.org settled their dispute and have setup a holding company to organize device sales using he Arduino brand. In a addition, a not-for-profit company is being setup to run the educational part of the organization.
I'm assuming this fixes all the B.S. that was the "Genuino" fiasco. Good riddance but the brand has been severely damaged by their scorched earth tactics with devices like the Raspberry Pi gaining amazing traction. It will be interesting to see if it can recover.
Ardiunos were fantastic in their time, but the industry has moved on.
Why work on an 8-bit MCU where you [mostly] have to bit bang IO when you can buy something like an STM32 which has hardware acceleration (DMA) for IO, and on higher models even adds things like an RTC?
Arduino has a great community, but there are far better choices available now, which are even Arduino compatible (e.g. Teensy) for the same price, but that use an ARM core instead of AVR.
Arduino now is a dead end. ARM ate the world, and it's now the better choice for new projects. Unless there's a need to support legacy designs implemented with Arduino, I see no compelling reason for people to continue to use them.
Also, for many uses programming in Linux is the exact opposite of direct when comparing to banging out some bare metal C or C++ on a dinky 8-bit micro. Maybe using a RasPi to blink LED or read a temperature sensor is more accessible to some people and that's a good thing, but it's like killing ants with a tactical nuke.
And the ecosystem of Arduino "shields" has become so popular that lots of people and companies make shields. Even the newer environments such as ARM's mBed will accept arduino shields due to their availability.
Collecting sensor data? Arduino is a lot leaner and to the point. Performing computations on sensor data? Might be better to use a Pi.