Sound like bullshit. We already had +1.45°C last year¹ and even if we completely stopped emitting anything at all, our excessive emissions from the past will certainly cause the temperature to rise over 1.5°C. The emissions path for 1.5°C would need to be negative very soon or maybe even years ago.
¹ https://wmo.int/media/news/wmo-confirms-2023-smashes-global-temperature-record