In the old days, the response to journalists' questions about "is this related to climate change" was always along the lines of, while climate change will increase the frequency of events such as this it's not possible to assign individual events to climate change.
However, science moves on, and meteorologists and climate scientists have been developing the field of 'climate attribution'.
A recent perspective piece in Nature (free access) explains:
A recent special issue of the Bulletin of the American Meteorological Society called Explaining Extreme Events of 2019 from a Climate Perspective contains a whole load of open-access articles exploring the extent of anthropogenic influence on all kinds of extreme weather events, from fires to floods, rainfall and heatwaves.The randomness of weather is still a challenge, but physics-based calculations of the workings of the global atmosphere can simulate numerous ways in which the weather could have played out, and compare that with versions of how the weather would have looked in the ‘world that might have been’ without human influence. This lets us estimate how anthropogenic climate change shifted the odds of a drought, heatwave or heavy rain event.
The most crucial use of this information is to make planning more pragmatic. Putting numbers on the increased likelihood of weather extremes increasingly informs my work on climate-change risk assessments, which in turn helps policymakers and planners to apply these methods to saving lives and livelihoods.
Knowing how much more likely heavy rains or heatwaves are can help those who manage grids, roads and rivers to prepare for events that are no longer too improbable to worry about. After major flooding in 2007, UK electricity-transmission and electricity-distribution companies implemented flood-protection measures for substations; quantifying how climate change is increasing flood risk helped to convince the industry regulator that the investment was necessary.
Climate attribution is now a very active area of mainstream earth sciences research. Expect to see more comments attributing events to climate change following natural disasters in 2021.